/* Knoxville Basement Pros — shared stylesheet.
   Identity: deep slate + steel blue, serif display type, editorial/data-forward.
   Mobile-first. No frameworks, no webfonts (system stacks only). */
:root{
  --slate:#0f172a;
  --slate-2:#1e293b;
  --deep:#1e3a5f;
  --blue:#1d4ed8;
  --steel:#3b82f6;
  --sky:#dbeafe;
  --amber:#b45309;
  --ink:#1f2937;
  --muted:#64748b;
  --line:#e2e8f0;
  --bg:#f8fafc;
  --card:#ffffff;
  --green:#15803d;
  --radius:12px;
  --shadow:0 8px 24px rgba(15,23,42,.07);
  --max:1120px;
  --serif:Georgia,"Times New Roman",Times,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue)}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
section{padding:54px 0}
h1,h2,h3{font-family:var(--serif);line-height:1.28;color:var(--slate);margin:0 0 .55em;font-weight:700}
h1{font-size:clamp(1.9rem,4.4vw,2.8rem);letter-spacing:-.01em}
h2{font-size:clamp(1.35rem,2.8vw,1.8rem);margin-top:1.5em}
h3{font-family:var(--sans);font-size:1.08rem}
p{margin:0 0 1em}
.lead{font-size:1.12rem;color:#334155;max-width:64ch}
.eyebrow{display:inline-block;font-family:var(--sans);font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:.5em}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:var(--slate);border-bottom:3px solid var(--blue)}
.header-inner{display:flex;align-items:center;gap:16px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:#fff;margin-right:auto}
.brand-mark{width:36px;height:36px;border-radius:8px;background:linear-gradient(135deg,var(--steel),var(--blue));display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:1.15rem;font-weight:800}
.brand-text{font-family:var(--serif);font-size:1.18rem;font-weight:700}
.brand-text strong{color:#93c5fd;font-weight:700}
.brand-text small{display:block;font-family:var(--sans);font-size:.68rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:#94a3b8}
.main-nav{display:flex;gap:2px}
.main-nav a{text-decoration:none;color:#cbd5e1;font-weight:600;font-size:.93rem;padding:10px 11px;border-radius:8px;white-space:nowrap}
.main-nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.header-cta{display:flex;align-items:center;gap:12px}
.phone-link{font-weight:800;color:#fff;text-decoration:none;white-space:nowrap;font-size:1rem}
.phone-link:hover{color:#bfdbfe}
.nav-toggle{display:none;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:8px;font-size:1.25rem;padding:6px 12px;cursor:pointer;color:#fff}

/* Buttons */
.btn{display:inline-block;text-decoration:none;font-weight:700;border-radius:9px;padding:13px 24px;font-size:1rem;border:2px solid transparent;cursor:pointer;font-family:var(--sans)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#1e40af;color:#fff}
.btn-outline{background:#fff;color:var(--slate);border-color:var(--line)}
.btn-outline:hover{border-color:var(--blue);color:var(--blue)}
.btn-large{padding:15px 30px;font-size:1.08rem}
.btn-block{width:100%;text-align:center}

/* Hero — editorial, data-forward */
.hero{background:linear-gradient(165deg,#0f172a 0%,#1e293b 60%,#1e3a5f 100%);color:#fff;padding:70px 0 0;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(-45deg,transparent 0 26px,rgba(255,255,255,.022) 26px 27px);pointer-events:none}
.hero h1{color:#fff;max-width:22ch}
.hero .lead{color:#cbd5e1;max-width:62ch}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 34px}
.hero .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.hero .btn-outline:hover{border-color:#fff;color:#fff}
.hero-stats{background:rgba(0,0,0,.28);border-top:1px solid rgba(255,255,255,.12);position:relative}
.hero-stats .container{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.hstat{padding:22px 26px;border-left:1px solid rgba(255,255,255,.12)}
.hstat:first-child{border-left:none;padding-left:0}
.hstat b{display:block;font-family:var(--serif);font-size:1.65rem;color:#fff}
.hstat span{font-size:.86rem;color:#94a3b8}

/* Cards & grids */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:0 0 var(--radius) var(--radius);padding:26px;box-shadow:var(--shadow)}
.card h3{margin-top:0;font-family:var(--serif);font-size:1.25rem}
.field-note{background:#fffbeb;border:1px solid #fde68a;border-left:5px solid var(--amber);border-radius:0 10px 10px 0;padding:18px 22px;margin:0 0 1.4em}
.field-note p{margin:0}
.field-note strong{color:#92400e}

/* Answer-first blocks */
.answer{background:#eff6ff;border-left:4px solid var(--steel);border-radius:0 10px 10px 0;padding:17px 22px;margin:0 0 1.2em}
.answer p{margin:0}
.key-takeaways{background:var(--slate);color:#e2e8f0;border-radius:var(--radius);padding:28px 30px;margin:0 0 1.6em}
.key-takeaways h2{color:#fff;margin-top:0;font-size:1.4rem}
.key-takeaways ul{margin:0;padding-left:1.2em}
.key-takeaways li{margin-bottom:.55em}
.key-takeaways strong{color:#bfdbfe}

/* Tables */
.table-wrap{overflow-x:auto;margin:0 0 1.5em;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{width:100%;border-collapse:collapse;font-size:.94rem;min-width:580px}
th,td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--slate);color:#fff;font-weight:700;font-family:var(--sans)}
tr:last-child td{border-bottom:none}
tbody tr:nth-child(even){background:#f8fafc}

/* Steps */
.steps{counter-reset:step;list-style:none;padding:0;margin:0 0 1.5em;display:grid;gap:14px}
.steps li{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 20px 20px 74px;position:relative;box-shadow:var(--shadow)}
.steps li::before{counter-increment:step;content:counter(step);position:absolute;left:20px;top:20px;width:38px;height:38px;border-radius:8px;background:var(--slate);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:1.05rem;font-family:var(--serif)}
.steps h3{margin:0 0 .3em}
.steps p{margin:0;color:#475569}

/* FAQ */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;overflow:hidden}
.faq-q{width:100%;background:none;border:none;text-align:left;font-size:1.02rem;font-weight:700;color:var(--slate);padding:17px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;font-family:var(--sans)}
.faq-q::after{content:"+";font-size:1.35rem;color:var(--blue);flex-shrink:0;font-weight:400}
.faq-item.open .faq-q::after{content:"–"}
.faq-a{display:none;padding:0 20px 20px;color:#475569}
.faq-item.open .faq-a{display:block}

/* CTA band */
.cta-band{background:linear-gradient(135deg,var(--deep),var(--slate));color:#fff;border-radius:16px;padding:44px;text-align:center;margin:54px 0;border-top:4px solid var(--blue)}
.cta-band h2{color:#fff;margin-top:0}
.cta-band p{color:#cbd5e1;max-width:54ch;margin:0 auto 1.4em}
.cta-band .btn-primary{background:#fff;color:var(--slate)}
.cta-band .btn-primary:hover{background:var(--sky)}
.cta-band .phone-big{display:block;margin-top:16px;color:#fff;font-weight:800;font-size:1.35rem;text-decoration:none}

/* Forms */
.form-card{background:#fff;border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:0 0 16px 16px;box-shadow:var(--shadow);padding:34px;max-width:660px;margin:0 auto}
.form-grid{display:grid;gap:16px}
.form-grid .two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{font-weight:700;font-size:.9rem;color:var(--slate);display:block;margin-bottom:6px}
input,select,textarea{width:100%;border:1.5px solid var(--line);border-radius:8px;padding:12px 14px;font-size:1rem;font-family:var(--sans);background:#fff}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(29,78,216,.14)}
.form-note{font-size:.87rem;color:var(--muted);text-align:center}
.form-error{display:none;background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;border-radius:8px;padding:12px 16px;margin-bottom:16px;font-size:.94rem}

/* Areas */
.area-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;list-style:none;padding:0;margin:0}
.area-grid li{background:#fff;border:1px solid var(--line);border-left:4px solid var(--steel);border-radius:0 10px 10px 0;padding:15px 18px}
.area-grid strong{color:var(--slate);display:block;margin-bottom:3px;font-family:var(--serif)}
.area-grid span{font-size:.88rem;color:var(--muted)}

/* Footer */
.site-footer{background:var(--slate);color:#94a3b8;padding:54px 0 26px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:34px}
.site-footer h4{color:#fff;margin:0 0 .8em;font-size:.95rem;font-family:var(--sans)}
.site-footer a{color:#94a3b8;text-decoration:none;font-size:.94rem}
.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:.55em}
.footer-brand{color:#fff;font-weight:700;font-size:1.15rem;text-decoration:none;font-family:var(--serif)}
.disclosure{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:15px 20px;font-size:.84rem;color:#94a3b8;margin-bottom:28px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;font-size:.83rem;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

.breadcrumbs{font-size:.86rem;color:var(--muted);margin:0 0 8px}
.breadcrumbs a{color:var(--muted);text-decoration:none}
.breadcrumbs a:hover{color:var(--blue)}

.content-split{display:grid;grid-template-columns:1fr 320px;gap:38px;align-items:start}
.sidebar{position:sticky;top:96px}
.sidebar .card{margin-bottom:18px}
.toc{list-style:none;padding:0;margin:0}
.toc li{margin-bottom:.45em}
.toc a{text-decoration:none;font-size:.93rem;color:#475569}
.toc a:hover{color:var(--blue)}

.checklist{list-style:none;padding:0;margin:0 0 1.5em}
.checklist li{padding:10px 0 10px 34px;position:relative;border-bottom:1px solid var(--line)}
.checklist li::before{content:"✓";position:absolute;left:4px;top:10px;color:var(--green);font-weight:800}

.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:0 0 1.5em}
.stat{background:#fff;border:1px solid var(--line);border-top:4px solid var(--steel);border-radius:0 0 var(--radius) var(--radius);padding:20px;text-align:center;box-shadow:var(--shadow)}
.stat b{display:block;font-family:var(--serif);font-size:1.6rem;color:var(--slate)}
.stat span{font-size:.86rem;color:var(--muted)}

@media (max-width:900px){
  .content-split{grid-template-columns:1fr}
  .sidebar{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
  .main-nav{position:fixed;inset:70px 0 auto 0;background:var(--slate);flex-direction:column;padding:12px 20px 20px;border-bottom:3px solid var(--blue);display:none}
  .main-nav.open{display:flex}
  .main-nav a{color:#e2e8f0}
  .nav-toggle{display:block}
  .header-cta .phone-link{display:none}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr}
  .form-grid .two{grid-template-columns:1fr}
  .hero-stats .container{grid-template-columns:1fr}
  .hstat{border-left:none;border-top:1px solid rgba(255,255,255,.12);padding:16px 0}
  .hstat:first-child{border-top:none}
  .cta-band{padding:32px 22px}
  section{padding:38px 0}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .hero{padding-top:50px}
}

/* Hero showcase image */
.hero-media { margin: 2.5rem auto 0; max-width: 1024px; }
.hero-media img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 14px; box-shadow: 0 18px 44px rgba(0, 0, 0, 0.20); }
@media (max-width: 640px) { .hero-media { margin-top: 2rem; } }