:root {
  --bg-primary: #F7F8FB;
  --bg-secondary: #EEF2F7;
  --bg-card: #FFFFFF;
  --bg-input: #FFFFFF;
  --border-color: rgba(15, 23, 42, 0.11);
  --border-hover: rgba(15, 23, 42, 0.22);
  --accent-gold: #B38314;
  --accent-blue: #2257D6;
  --accent-green: #168A55;
  --accent-red: #C24141;
  --text-primary: #111827;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
html { background: var(--bg-primary); color-scheme: light; }
body { margin: 0; background: var(--bg-primary); color: var(--text-primary); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 15px; line-height: 1.6; }
a { color: inherit; }
.ptk-site { min-height: 100vh; background: linear-gradient(180deg, #fff 0, #F7F8FB 360px, #F7F8FB 100%); }
.ptk-header, .ptk-main, .ptk-footer { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.ptk-header { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 14px 0; border-bottom: 1px solid var(--border-color); backdrop-filter: blur(18px); background: rgba(255,255,255,.88); }
.ptk-brand { color: var(--accent-blue); font: 800 1.35rem Inter, ui-sans-serif, system-ui, sans-serif; letter-spacing: -.02em; text-decoration: none; }
.ptk-nav, .ptk-footer nav { display: flex; flex-wrap: wrap; gap: .9rem; color: var(--text-secondary); }
.ptk-nav a, .ptk-footer a { text-decoration: none; }
.ptk-nav a:hover, .ptk-footer a:hover { color: var(--text-primary); }
.ptk-lang { display: flex; align-items: center; gap: .5rem; margin-left: auto; }
.ptk-lang label { color: var(--text-secondary); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; font-weight: 700; }
.ptk-lang select { min-height: 40px; border: 1px solid var(--border-color); border-radius: 10px; background: var(--bg-input); color: var(--text-primary); padding: 0 .7rem; font: 14px Inter, ui-sans-serif, system-ui, sans-serif; }
.ptk-lang select:focus { outline: none; border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(77,126,255,.25); }
.ptk-main { padding: 2.5rem 0 4rem; }
.ptk-hero { display: grid; gap: .75rem; padding: 2rem 0 1.25rem; }
.ptk-hero-panel { grid-template-columns: minmax(0, 1fr) minmax(260px, 360px); align-items: stretch; gap: 1rem; padding: 1.5rem; border: 1px solid var(--border-color); border-radius: 20px; background: linear-gradient(135deg, #fff, #F1F5F9); box-shadow: var(--shadow-card); }
.ptk-eyebrow { margin: 0; color: var(--accent-blue); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; font-weight: 800; }
.ptk-hero h1 { margin: 0; max-width: 860px; font: 800 clamp(1.9rem, 4vw, 3.2rem)/1.03 Inter, ui-sans-serif, system-ui, sans-serif; letter-spacing: -.035em; }
.ptk-hero p:not(.ptk-eyebrow) { margin: 0; max-width: 720px; color: var(--text-secondary); font-size: 1.05rem; }
.ptk-hero-badges { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.1rem; }
.ptk-hero-badges span { display: inline-flex; align-items: center; min-height: 32px; padding: 0 .75rem; border: 1px solid var(--border-color); border-radius: 999px; color: var(--text-secondary); background: #fff; font-size: 13px; }
.ptk-answer-card { display: grid; align-content: center; gap: .55rem; padding: 1.2rem; border: 1px solid rgba(34,87,214,.18); border-radius: 16px; background: #fff; box-shadow: 0 8px 22px rgba(34,87,214,.08); }
.ptk-answer-card span { color: var(--accent-blue); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; font-weight: 800; }
.ptk-answer-card strong { font-size: 1rem; line-height: 1.45; }
.ptk-ad { display: grid; place-items: center; min-height: 90px; margin: 1.5rem 0; border: 1px dashed var(--border-hover); border-radius: 14px; color: var(--text-muted); background: #fff; }
.ptk-ad-top { margin-top: .5rem; }
.ptk-section { margin-top: 2.5rem; }
.ptk-section-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.ptk-section-head h2, .ptk-content h2 { margin: 0; font: 800 1.65rem Inter, ui-sans-serif, system-ui, sans-serif; letter-spacing: -.02em; }
.ptk-section-head a { color: var(--accent-blue); text-decoration: none; font-weight: 700; }
.ptk-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.ptk-card { position: relative; display: grid; gap: .45rem; min-height: 138px; padding: 1.25rem; border: 1px solid var(--border-color); border-radius: 16px; background: var(--bg-card); box-shadow: var(--shadow-card); text-decoration: none; transition: transform .16s ease, border-color .16s ease, background .16s ease; }
.ptk-card::after { content: "→"; position: absolute; right: 1rem; bottom: .8rem; color: var(--accent-blue); opacity: .65; }
.ptk-card:hover { border-color: var(--border-hover); transform: translateY(-2px); background: #FAFCFF; }
.ptk-card strong { font-size: 1rem; }
.ptk-card span { color: var(--text-secondary); }
.ptk-tool { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 1rem; align-items: start; margin-top: 1rem; }
.ptk-inputs, .ptk-results, .ptk-content { padding: 1.5rem; border: 1px solid var(--border-color); border-radius: 16px; background: var(--bg-card); box-shadow: var(--shadow-card); }
.ptk-inputs::before { content: attr(data-title); display: block; margin-bottom: 1rem; color: var(--accent-blue); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; font-weight: 800; }
.ptk-results::before { content: attr(data-title); display: block; margin-bottom: 1rem; color: var(--accent-blue); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; font-weight: 800; }
.ptk-field { display: grid; gap: .65rem; margin-bottom: 1rem; }
.ptk-field label, .ptk-result-label, .ptk-table th { color: var(--text-secondary); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; font-weight: 700; }
.ptk-control-row { display: grid; grid-template-columns: 1fr 128px; gap: .75rem; align-items: center; }
.ptk-field input, .ptk-field select, .ptk-field textarea { width: 100%; min-height: 48px; border: 1px solid var(--border-color); border-radius: 10px; background: var(--bg-input); color: var(--text-primary); padding: 0 .85rem; font: 16px Inter, ui-sans-serif, system-ui, sans-serif; }
.ptk-field textarea { min-height: 170px; padding: .9rem; resize: vertical; }
.ptk-field input:focus, .ptk-field select:focus, .ptk-field textarea:focus { outline: none; border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(77,126,255,.25); }
.ptk-field input[type="range"] { padding: 0; accent-color: var(--accent-blue); }
.ptk-radio { display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; }
.ptk-radio label, .ptk-toggle label { display: flex; align-items: center; justify-content: center; min-height: 48px; border: 1px solid var(--border-color); border-radius: 10px; background: #F8FAFC; cursor: pointer; }
.ptk-radio input, .ptk-toggle input { margin-right: .45rem; accent-color: var(--accent-blue); }
.ptk-primary { display: grid; gap: .35rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border-color); }
.ptk-primary strong { color: var(--accent-blue); font-size: clamp(2rem, 7vw, 3.4rem); line-height: 1; }
.ptk-result-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; margin-top: 1rem; }
.ptk-result-card { padding: 1rem; border: 1px solid var(--border-color); border-radius: 12px; background: #F8FAFC; }
.ptk-result-card strong { display: block; margin-top: .25rem; font-size: 1.15rem; }
.ptk-donut-wrap { display: flex; align-items: center; gap: 1.25rem; margin: 1.25rem 0; padding: 1rem; border-radius: 12px; background: var(--bg-secondary); }
.ptk-donut { width: 132px; aspect-ratio: 1; flex: 0 0 auto; border-radius: 50%; background: conic-gradient(var(--accent-gold) 0 55%, var(--accent-blue) 55% 75%, var(--accent-green) 75% 88%, var(--accent-red) 88% 100%); position: relative; }
.ptk-donut::after { content: ""; position: absolute; inset: 22px; border-radius: 50%; background: #fff; }
.ptk-legend { display: grid; gap: .35rem; color: var(--text-secondary); }
.ptk-legend span::before { content: ""; display: inline-block; width: .7rem; height: .7rem; border-radius: 50%; margin-right: .45rem; background: var(--dot, var(--accent-gold)); }
.ptk-table-wrap { overflow: auto; margin-top: 1rem; border: 1px solid var(--border-color); border-radius: 12px; }
.ptk-table { width: 100%; border-collapse: collapse; min-width: 540px; }
.ptk-table th, .ptk-table td { padding: .75rem; border-bottom: 1px solid var(--border-color); text-align: right; }
.ptk-table th:first-child, .ptk-table td:first-child { text-align: left; }
.ptk-table tr.highlight { background: rgba(201,168,76,.12); }
.ptk-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1rem 0 1.5rem; }
.ptk-actions button, .ptk-results button { min-height: 44px; border: 1px solid var(--border-color); border-radius: 10px; background: #fff; color: var(--text-primary); padding: 0 1rem; font-weight: 700; cursor: pointer; }
.ptk-actions button:first-child { border-color: rgba(34,87,214,.28); background: #2257D6; color: #fff; }
.ptk-actions button:hover, .ptk-results button:hover { border-color: var(--border-hover); transform: translateY(-1px); }
.ptk-trust-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: .75rem; margin: 1rem 0 1.5rem; }
.ptk-trust-strip div { padding: 1rem; border: 1px solid var(--border-color); border-radius: 14px; background: #fff; box-shadow: var(--shadow-card); }
.ptk-trust-strip strong { display: block; color: var(--text-primary); font-size: 1.1rem; }
.ptk-trust-strip span { color: var(--text-secondary); font-size: 13px; }
.ptk-content { margin-top: 2rem; color: var(--text-secondary); }
.ptk-content h2, .ptk-content h3 { color: var(--text-primary); margin-top: 1.75rem; }
.ptk-content h2:first-child { margin-top: 0; }
.ptk-content a { color: var(--accent-blue); font-weight: 700; }
.ptk-content ul { padding-left: 1.1rem; }
.ptk-content li { margin: .45rem 0; }
.ptk-answer-block { padding: 1rem; border: 1px solid rgba(34,87,214,.16); border-radius: 14px; background: #F3F7FF; }
.ptk-answer-block h2 { margin-top: 0; }
.ptk-footer { display: flex; justify-content: space-between; gap: 1rem; padding: 2rem 0; border-top: 1px solid var(--border-color); color: var(--text-secondary); }
.ptk-footer p { max-width: 620px; margin: 0; }
.ptk-status { margin-top: .75rem; color: var(--accent-green); }
.ptk-error { color: var(--accent-red); }

@media (max-width: 820px) {
  .ptk-header, .ptk-footer, .ptk-tool, .ptk-donut-wrap, .ptk-hero-panel { grid-template-columns: 1fr; flex-direction: column; align-items: start; }
  .ptk-tool { display: grid; }
  .ptk-header { position: static; }
  .ptk-lang { width: 100%; margin-left: 0; }
  .ptk-lang select { flex: 1; }
  .ptk-trust-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .ptk-header, .ptk-main, .ptk-footer { width: min(100% - 28px, 980px); }
  .ptk-control-row, .ptk-result-grid { grid-template-columns: 1fr; }
  .ptk-radio { grid-template-columns: repeat(2, 1fr); }
  .ptk-inputs, .ptk-results, .ptk-content { padding: 1rem; }
  .ptk-hero-panel { padding: 1rem; }
  .ptk-trust-strip { grid-template-columns: 1fr; }
}

@media print {
  .ptk-header, .ptk-nav, .ptk-ad, .ptk-actions, .ptk-content, .ptk-footer { display: none !important; }
  body, .ptk-site { background: #fff !important; color: #111 !important; }
  .ptk-main { width: 100%; padding: 0; }
  .ptk-tool { display: block; }
  .ptk-inputs { display: none; }
  .ptk-results { color: #111; background: #fff; border: 1px solid #ccc; box-shadow: none; }
  .ptk-result-label, .ptk-table th { color: #333; }
}