/* 78983.com — Step Up Your Numbers. Original design system. */
:root{
  --bg:#f7f8fb; --surface:#ffffff; --surface-2:#eef2f7; --ink:#0d1526; --ink-2:#3b4660; --muted:#6b7590;
  --line:#dde3ee; --brand:#0f9f6e; --brand-2:#0b7a55; --brand-ink:#ffffff; --gold:#e6a400; --gold-soft:#fff4d6;
  --accent:#3b5bfd; --danger:#d93f3f; --ok:#0f9f6e;
  --radius:16px; --radius-sm:10px; --shadow:0 1px 2px rgba(13,21,38,.06),0 8px 28px rgba(13,21,38,.07);
  --max:1180px; --font:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif; --display:"Space Grotesk",var(--font);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0a0f1c; --surface:#111a2c; --surface-2:#18233a; --ink:#eef2fb; --ink-2:#c3cbe0; --muted:#8c97b3; --line:#24304a;
  --brand:#22c58b; --brand-2:#19a573; --gold:#ffc433; --gold-soft:#2b2410; --accent:#7f97ff;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.35);}}
:root[data-theme="dark"]{
  --bg:#0a0f1c; --surface:#111a2c; --surface-2:#18233a; --ink:#eef2fb; --ink-2:#c3cbe0; --muted:#8c97b3; --line:#24304a;
  --brand:#22c58b; --brand-2:#19a573; --gold:#ffc433; --gold-soft:#2b2410; --accent:#7f97ff;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.35);}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-underline-offset:3px}
h1,h2,h3,h4{font-family:var(--display);line-height:1.15;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,5vw,3.6rem)} h2{font-size:clamp(1.6rem,3.2vw,2.3rem)} h3{font-size:1.25rem}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;background:var(--surface);padding:8px 12px;border-radius:8px}

/* Top interest bar (required on every page) */
.topbar{background:linear-gradient(90deg,#0d1526,#13304a);color:#fff;font-size:.88rem;text-align:center;padding:8px 16px}
.topbar a{color:#ffd76a;font-weight:600;text-decoration:none}
.topbar a:hover{text-decoration:underline}

/* Header */
.site-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:20px;height:66px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--display);font-weight:700;font-size:1.25rem}
.logo svg{width:34px;height:34px}
.logo small{display:block;font:500 .7rem var(--font);color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.menu{display:flex;gap:4px;margin-left:auto;list-style:none;padding:0;margin-top:0;margin-bottom:0}
.menu a{display:block;padding:8px 12px;border-radius:999px;color:var(--ink-2);text-decoration:none;font-weight:500;font-size:.95rem}
.menu a:hover,.menu a[aria-current="page"]{background:var(--surface-2);color:var(--ink)}
.nav-cta{display:flex;gap:8px;align-items:center}
.icon-btn{border:1px solid var(--line);background:var(--surface);color:var(--ink);width:40px;height:40px;border-radius:999px;cursor:pointer;display:grid;place-items:center}
.burger{display:none}
@media (max-width:980px){
  .menu{position:fixed;inset:66px 0 auto 0;flex-direction:column;background:var(--surface);padding:12px 16px 20px;border-bottom:1px solid var(--line);display:none;box-shadow:var(--shadow)}
  .menu.open{display:flex}
  .burger{display:grid}
  .nav-cta .btn{display:none}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;padding:12px 20px;border-radius:999px;border:1px solid transparent;font-weight:600;text-decoration:none;cursor:pointer;font-size:.98rem;transition:transform .15s,box-shadow .15s,background .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:var(--brand-ink)}
.btn-primary:hover{background:var(--brand-2);box-shadow:0 8px 24px color-mix(in srgb,var(--brand) 35%,transparent)}
.btn-gold{background:var(--gold);color:#1b1400}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--surface-2)}
.btn-sm{padding:8px 14px;font-size:.88rem}
.btn-block{width:100%}

/* Hero */
.hero{position:relative;padding:72px 0 56px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-40% -10% auto auto;width:720px;height:720px;background:radial-gradient(closest-side,color-mix(in srgb,var(--brand) 22%,transparent),transparent);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;gap:8px;align-items:center;background:var(--gold-soft);color:var(--ink);border:1px solid color-mix(in srgb,var(--gold) 40%,transparent);padding:6px 12px;border-radius:999px;font-size:.82rem;font-weight:600}
.lead{font-size:1.15rem;color:var(--ink-2);max-width:60ch}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}
.stats{display:flex;gap:28px;flex-wrap:wrap;margin-top:12px}
.stat b{display:block;font-family:var(--display);font-size:1.6rem}
.stat span{color:var(--muted);font-size:.88rem}
.steps-art{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow)}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.hero{padding:44px 0 32px}}

/* Search */
.search{position:relative;max-width:560px}
.search input{width:100%;padding:16px 18px 16px 48px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:1rem;box-shadow:var(--shadow)}
.search svg{position:absolute;left:18px;top:50%;transform:translateY(-50%);width:20px;color:var(--muted)}
.search-results{position:absolute;left:0;right:0;top:calc(100% + 6px);background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);z-index:20;display:none;max-height:340px;overflow:auto}
.search-results a{display:block;padding:10px 16px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line)}
.search-results a:hover,.search-results a:focus{background:var(--surface-2)}

/* Sections & cards */
section{padding:56px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.section-head p{color:var(--muted);margin:0;max-width:60ch}
.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:980px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);position:relative}
.card h3{margin-bottom:.35em}
.card p{color:var(--ink-2);margin-bottom:.6em}
a.card{text-decoration:none;color:inherit;transition:transform .18s,border-color .18s}
a.card:hover{transform:translateY(-3px);border-color:var(--brand)}
.calc-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:color-mix(in srgb,var(--brand) 14%,transparent);color:var(--brand);margin-bottom:12px;font-size:1.3rem}
.tag{display:inline-block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--brand);background:color-mix(in srgb,var(--brand) 12%,transparent);padding:3px 8px;border-radius:999px}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.chip{border:1px solid var(--line);background:var(--surface);color:var(--ink-2);padding:7px 14px;border-radius:999px;cursor:pointer;font-weight:500}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}

/* Calculator */
.calc{display:grid;grid-template-columns:380px 1fr;gap:24px;align-items:start}
@media (max-width:900px){.calc{grid-template-columns:1fr}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:flex;justify-content:space-between;font-weight:600;font-size:.92rem;margin-bottom:6px}
.field label output{color:var(--brand);font-family:var(--display)}
.field input[type=number],.field select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);font-size:1rem}
.field input[type=range]{width:100%;accent-color:var(--brand);margin-top:8px}
.results{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:18px}
.result{background:var(--surface-2);border-radius:12px;padding:14px}
.result span{display:block;font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.result b{font-family:var(--display);font-size:1.45rem;word-break:break-word}
.result.primary{background:linear-gradient(135deg,var(--brand),#0c6e8f);color:#fff}
.result.primary span{color:rgba(255,255,255,.8)}
.chart-box{position:relative;height:300px}
.chart-box canvas{width:100%!important;height:100%!important}
.calc-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.table-wrap{max-height:340px;overflow:auto;border:1px solid var(--line);border-radius:12px;margin-top:16px}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{padding:9px 12px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap}
th:first-child,td:first-child{text-align:left}
thead th{position:sticky;top:0;background:var(--surface-2)}

/* Prose */
.prose{max-width:760px}
.prose h2{margin-top:1.6em}.prose h3{margin-top:1.3em}
.prose ul,.prose ol{padding-left:1.2em}
.prose li{margin-bottom:.4em}
.formula{font-family:ui-monospace,Menlo,monospace;background:var(--surface-2);padding:12px 14px;border-radius:10px;overflow-x:auto}
.callout{border-left:4px solid var(--gold);background:var(--gold-soft);padding:14px 16px;border-radius:0 12px 12px 0;margin:1.2em 0}
.breadcrumb{font-size:.88rem;color:var(--muted);margin-bottom:12px}
.breadcrumb a{color:var(--muted)}

/* Forms */
form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:640px){form .row{grid-template-columns:1fr}}
.form-field{margin-bottom:14px}
.form-field label{display:block;font-weight:600;font-size:.9rem;margin-bottom:5px}
.form-field input,.form-field select,.form-field textarea{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);font:inherit}
.form-field textarea{min-height:110px;resize:vertical}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus,.field input:focus{outline:2px solid color-mix(in srgb,var(--brand) 55%,transparent);outline-offset:1px}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.86rem;color:var(--ink-2);margin:6px 0 14px}
.consent input{margin-top:4px}
.hp{position:absolute;left:-5000px}
.form-status{margin-top:12px;font-weight:600}
.form-status.ok{color:var(--ok)}.form-status.err{color:var(--danger)}
.stepper{display:flex;gap:6px;margin-bottom:16px}
.stepper i{flex:1;height:6px;border-radius:99px;background:var(--line)}
.stepper i.on{background:var(--brand)}
.form-step{display:none}.form-step.active{display:block}
.option-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:14px}
.option-grid label{border:1px solid var(--line);border-radius:12px;padding:14px;cursor:pointer;display:flex;gap:10px;align-items:center;font-weight:500;background:var(--bg)}
.option-grid input{accent-color:var(--brand)}
.option-grid label:has(input:checked){border-color:var(--brand);background:color-mix(in srgb,var(--brand) 9%,var(--bg))}

/* Lead-gen band */
.leadband{background:linear-gradient(135deg,#0d1526 0%,#0e3b3a 60%,#0f6b4e 100%);color:#fff;border-radius:24px;padding:36px;display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}
.leadband p,.leadband li{color:rgba(255,255,255,.85)}
.leadband .card{color:var(--ink)}
.checks{list-style:none;padding:0}.checks li{padding-left:28px;position:relative;margin-bottom:8px}
.checks li::before{content:"✓";position:absolute;left:0;color:#7ff0bf;font-weight:800}
@media (max-width:900px){.leadband{grid-template-columns:1fr;padding:24px}}

/* Tiers */
.tier{display:flex;flex-direction:column}
.tier .price{font-family:var(--display);font-size:2rem;font-weight:700}
.tier ul{padding-left:1.1em;color:var(--ink-2);flex:1}
.tier.featured{border:2px solid var(--gold)}
.ribbon{position:absolute;top:-12px;right:16px;background:var(--gold);color:#1b1400;font-size:.75rem;font-weight:800;padding:4px 10px;border-radius:999px}
.progress{height:12px;background:var(--surface-2);border-radius:99px;overflow:hidden}
.progress > i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--gold))}

/* Video */
.video{position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#000;cursor:pointer}
.video img{width:100%;height:100%;object-fit:cover;opacity:.85;transition:opacity .2s}
.video:hover img{opacity:1}
.video .play{position:absolute;inset:0;display:grid;place-items:center}
.video .play span{width:68px;height:48px;background:#e62117;border-radius:14px;display:grid;place-items:center;color:#fff;font-size:1.4rem}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* FAQ */
details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::after{content:"+";font-size:1.3rem;color:var(--brand)}
details[open] summary::after{content:"–"}
details p{margin:.8em 0 0;color:var(--ink-2)}

/* Number explorer */
.big-number{font-family:var(--display);font-size:clamp(2.6rem,9vw,5.5rem);font-weight:700;letter-spacing:.02em;background:linear-gradient(90deg,var(--brand),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.digits{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}
.digit{width:54px;height:64px;border-radius:12px;background:var(--surface-2);display:grid;place-items:center;font-family:var(--display);font-size:1.8rem;font-weight:700}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.kv div{background:var(--surface-2);border-radius:10px;padding:12px}
.kv span{display:block;font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.kv b{word-break:break-all}

/* Footer */
.site-footer{background:#0b1220;color:#c8d0e3;padding:56px 0 28px;margin-top:40px}
.site-footer a{color:#e8ecf6;text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.site-footer h4{color:#fff;font-size:1rem}
.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin-bottom:8px}
.legal{border-top:1px solid #1f2a42;margin-top:36px;padding-top:20px;font-size:.84rem;color:#8e99b5}
@media (max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.foot-grid{grid-template-columns:1fr}}
.newsletter{display:flex;gap:8px;margin-top:12px}
.newsletter input{flex:1;min-width:0;padding:11px 14px;border-radius:999px;border:1px solid #2a3654;background:#121b2e;color:#fff}

/* Cookie banner */
.cookie{position:fixed;left:16px;right:16px;bottom:16px;max-width:620px;margin:0 auto;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:16px 18px;z-index:60;display:none}
.cookie.show{display:block}
.cookie p{font-size:.9rem;color:var(--ink-2);margin-bottom:10px}
.cookie .btns{display:flex;gap:8px;flex-wrap:wrap}

/* Misc */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s,transform .5s}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}*{scroll-behavior:auto!important}}
.ad-note{font-size:.7rem;color:var(--muted);text-align:center;text-transform:uppercase;letter-spacing:.1em;margin:6px 0}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:999px;font-weight:600;z-index:70;opacity:0;transition:opacity .2s;pointer-events:none}
.toast.show{opacity:1}
.page-hero{padding:48px 0 24px}
.page-hero p{color:var(--ink-2);font-size:1.1rem;max-width:65ch}
.back-top{position:fixed;right:16px;bottom:16px;z-index:50;display:none}
.back-top.show{display:grid}