/* ============================================================
   ErecPower Blog - Dedicated Blog Stylesheet
   Palette: Navy / Steel-Blue / Amber accent
   Type: Space Grotesk (display) + Inter (body)
   Evidence-graded editorial design - CSS-only visuals, no images required.
   ============================================================ */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --navy:#16233B;
  --navy-deep:#0D1626;
  --steel:#3E5878;
  --steel-light:#7E97B8;
  --amber:#D99A3E;
  --amber-deep:#B87A22;
  --cream:#F3F1EA;
  --ice:#FAFAF7;
  --ink:#141B28;
  --body:#4A5468;
  --muted:#8993A6;
  --line:rgba(20,27,40,.1);
  --white:#ffffff;
  --font-display:'Space Grotesk',sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --grad-navy:linear-gradient(135deg,#0D1626 0%,#3E5878 100%);
  --grad-amber:linear-gradient(135deg,#B87A22 0%,#E8B25F 100%);
  --shadow-sm:0 2px 10px rgba(20,27,40,.08);
  --shadow:0 10px 30px rgba(20,27,40,.14);
  --shadow-lg:0 26px 60px rgba(20,27,40,.22);
  --radius:16px;--radius-sm:10px;--radius-pill:999px;
  --transition:all .25s ease;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-body);color:var(--body);background:var(--white);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5,h6{font-family:var(--font-display);color:var(--ink);line-height:1.22;font-weight:700}
a{text-decoration:none;color:inherit;transition:var(--transition)}
.ep-wrap{max-width:1140px;margin:0 auto;padding:0 1.4rem}
ul{list-style:none}

.ep-strip{background:var(--navy-deep);color:#e8edf5;text-align:center;font-size:.8rem;padding:9px 12px;font-weight:600}
.ep-strip span{opacity:.5;margin:0 8px}
.ep-nav{position:sticky;top:0;background:#fff;z-index:1000;border-bottom:1px solid var(--line)}
.ep-nav-inner{max-width:1140px;margin:0 auto;padding:.9rem 1.4rem;display:flex;align-items:center;justify-content:space-between;gap:1.4rem}
.ep-logo{font-family:var(--font-display);font-size:1.25rem;font-weight:700;color:var(--ink)}
.ep-logo span{color:var(--amber-deep)}
.ep-nav-links{display:flex;align-items:center;gap:1.3rem;font-weight:600;font-size:.89rem}
.ep-nav-links a{color:var(--body)}
.ep-nav-links a:hover{color:var(--steel)}
.ep-nav-cta{background:var(--grad-amber);color:#fff!important;padding:.58rem 1.25rem;border-radius:var(--radius-pill);font-weight:700}
.ep-mobile-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--ink)}

.ep-btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-weight:700;font-size:.96rem;padding:.82rem 1.75rem;border-radius:var(--radius-pill);border:none;cursor:pointer;transition:var(--transition)}
.ep-btn-amber{background:var(--grad-amber);color:#fff;box-shadow:0 10px 24px rgba(184,122,34,.35)}
.ep-btn-amber:hover{transform:translateY(-3px);box-shadow:0 15px 32px rgba(184,122,34,.45)}
.ep-btn-outline{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.ep-btn-outline:hover{border-color:var(--steel);color:var(--steel)}

/* Hero: CSS-only "evidence meter" bars, no images needed */
.ep-hero{position:relative;background:var(--grad-navy);color:rgba(255,255,255,.88);padding:4rem 0 3.4rem;overflow:hidden;text-align:center}
.ep-meter-row{position:absolute;bottom:0;left:0;width:100%;display:flex;align-items:flex-end;gap:3px;opacity:.28;height:70px;padding:0 4%}
.ep-meter-bar{flex:1;background:var(--amber);border-radius:3px 3px 0 0;animation:ep-grow 2.6s ease-in-out infinite alternate}
@keyframes ep-grow{from{transform:scaleY(.35)}to{transform:scaleY(1)}}
.ep-hero-inner{position:relative;z-index:2;max-width:720px;margin:0 auto}
.ep-eyebrow{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em;color:var(--amber);margin-bottom:.8rem}
.ep-hero h1{font-size:clamp(1.9rem,4vw,2.8rem);color:#fff;margin-bottom:1rem}
.ep-hero p{color:rgba(255,255,255,.7);font-size:1rem;max-width:600px;margin:0 auto}

.ep-filters{display:flex;flex-wrap:wrap;gap:.55rem;justify-content:center;margin:-1.5rem auto 2.4rem;max-width:900px;padding:0 1.4rem;position:relative;z-index:3}
.ep-chip{background:#fff;border:1.5px solid var(--line);color:var(--body);font-size:.82rem;font-weight:700;padding:.46rem 1.05rem;border-radius:var(--radius-pill);cursor:pointer;transition:var(--transition);box-shadow:var(--shadow-sm)}
.ep-chip:hover{border-color:var(--steel)}
.ep-chip.active{background:var(--grad-navy);color:#fff;border-color:transparent}

.ep-section{padding:1.4rem 0 5rem}
.ep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.ep-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);display:flex;flex-direction:column}
.ep-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--steel-light)}
.ep-card-grade{height:46px;background:var(--cream);display:flex;align-items:center;gap:8px;padding:0 1.3rem}
.ep-grade-dot{width:9px;height:9px;border-radius:50%}
.ep-grade-dot.strong{background:#2E8B57}
.ep-grade-dot.mixed{background:var(--amber)}
.ep-grade-dot.thin{background:#B85C5C}
.ep-grade-label{font-size:.72rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.ep-card-body{padding:1.4rem 1.4rem 1.6rem;flex:1;display:flex;flex-direction:column}
.ep-tag{display:inline-block;align-self:flex-start;font-size:.68rem;font-weight:700;color:var(--steel);background:#EEF2F7;padding:.26rem .7rem;border-radius:var(--radius-pill);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.75rem}
.ep-card h3{font-size:1.04rem;margin-bottom:.65rem;line-height:1.35;font-family:var(--font-body);font-weight:700}
.ep-card p{font-size:.85rem;color:var(--body);margin-bottom:1rem;flex:1}
.ep-readmore{font-size:.83rem;font-weight:700;color:var(--amber-deep)}
.ep-readmore:hover{color:var(--steel)}

.ep-final-cta{background:var(--grad-navy);padding:3.2rem 0;text-align:center}
.ep-final-cta h2{color:#fff;margin-bottom:.7rem;font-size:1.8rem}
.ep-final-cta p{color:rgba(255,255,255,.68);margin-bottom:1.4rem;max-width:540px;margin-left:auto;margin-right:auto}

/* Article page */
.ep-article-header{background:var(--grad-navy);padding:2.4rem 0;color:#fff}
.ep-article-header .ep-wrap{max-width:760px}
.ep-article-header .ep-eyebrow{color:var(--amber)}
.ep-article-header h1{color:#fff;font-size:clamp(1.55rem,3.2vw,2.15rem);margin-top:.5rem}
.ep-article-meta{display:flex;gap:1rem;flex-wrap:wrap;margin-top:1rem;font-size:.8rem;color:rgba(255,255,255,.58)}
.ep-breadcrumb{font-size:.8rem;color:rgba(255,255,255,.55);margin-bottom:1rem}
.ep-breadcrumb a{color:rgba(255,255,255,.8);font-weight:600}
.ep-article{max-width:720px;margin:0 auto;padding:2.8rem 1.4rem}
.ep-takeaways{background:var(--cream);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem 1.5rem;margin:1.6rem 0 2rem}
.ep-takeaways .tag{display:block;font-size:.7rem;font-weight:700;color:var(--steel);text-transform:uppercase;letter-spacing:.07em;margin-bottom:.6rem}
.ep-takeaways li{position:relative;padding-left:1.4rem;margin-bottom:.5rem;font-size:.92rem;color:var(--body)}
.ep-takeaways li::before{content:"\2713";position:absolute;left:0;color:var(--steel);font-weight:700}
.ep-article h2{font-size:1.32rem;margin:1.9rem 0 .8rem;color:var(--navy)}
.ep-article p,.ep-article li{color:var(--body);margin-bottom:.85rem}
.ep-article a{color:var(--amber-deep);font-weight:700}
.ep-flagbox{background:#FBF2E4;border-left:4px solid var(--amber);border-radius:0 12px 12px 0;padding:1rem 1.3rem;font-size:.85rem;color:var(--body);margin:1.5rem 0}
.ep-article-cta{background:var(--cream);border:1px solid var(--line);border-radius:var(--radius);padding:1.9rem;text-align:center;margin:2.4rem 0}
.ep-article-cta h3{margin-bottom:.5rem}
.ep-article-cta p{margin-bottom:1.1rem;color:var(--body)}
.ep-faq{margin:2rem 0}
.ep-faq-item{border-bottom:1px solid var(--line);padding:1rem 0}
.ep-faq-item h4{font-size:.98rem;margin-bottom:.4rem;color:var(--navy)}
.ep-faq-item p{font-size:.88rem;color:var(--body);margin:0}
.ep-related{margin-top:2.4rem}
.ep-related h3{font-size:1.1rem;margin-bottom:.9rem}
.ep-related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.9rem}
.ep-related-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:1rem 1.2rem;transition:var(--transition)}
.ep-related-card:hover{border-color:var(--steel-light);transform:translateY(-3px)}
.ep-related-card b{display:block;font-size:.9rem;margin-bottom:.25rem}
.ep-related-card span{font-size:.8rem;color:var(--muted)}

.ep-footer{background:#0D1626;color:rgba(255,255,255,.58);padding:2.4rem 0 1.3rem;font-size:.82rem;text-align:center}
.ep-footer a{color:rgba(255,255,255,.72);margin:0 .5rem}
.ep-footer p{margin-bottom:.75rem;max-width:720px;margin-left:auto;margin-right:auto;color:rgba(255,255,255,.42);font-size:.76rem}

@media(max-width:900px){
  .ep-grid,.ep-related-grid{grid-template-columns:1fr}
  .ep-nav-links{display:none}
  .ep-mobile-toggle{display:block}
}
@media(min-width:901px) and (max-width:1100px){
  .ep-grid{grid-template-columns:repeat(2,1fr)}
}