/* Strong Tower premium layer. Loaded only by pages with <body class="sp">. Builds on site.css tokens. */

body.sp {
  --sp-glass: linear-gradient(160deg, rgba(255, 236, 240, 0.055), rgba(255, 236, 240, 0.012));
  --sp-glass-strong: linear-gradient(160deg, rgba(201, 116, 131, 0.16), rgba(21, 11, 15, 0.92) 55%);
  --sp-ring: linear-gradient(135deg, rgba(201, 116, 131, 0.75), rgba(94, 234, 212, 0.25) 45%, rgba(201, 116, 131, 0.08));
  --sp-glow: 0 30px 80px -30px rgba(158, 43, 64, 0.55);
  --sp-radius: 18px;
}

/* ---------- Ambient backdrop ---------- */
body.sp main { position: relative; isolation: isolate; }
body.sp main::before {
  content: "";
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(900px 520px at 88% 6%, rgba(158, 43, 64, 0.22), transparent 60%),
    radial-gradient(700px 600px at -5% 38%, rgba(94, 234, 212, 0.05), transparent 60%),
    radial-gradient(800px 700px at 100% 72%, rgba(122, 31, 46, 0.16), transparent 62%);
}
body.sp main::after {
  content: "";
  position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 236, 240, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 236, 240, 0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, transparent, #000 12%, #000 70%, transparent);
}

/* ---------- Reading progress ---------- */
.sp-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 200; pointer-events: none;
  background: transparent;
}
.sp-progress span {
  display: block; height: 100%; width: 100%; transform-origin: 0 50%; transform: scaleX(0);
  background: linear-gradient(90deg, var(--maroon-bright), var(--accent), var(--cyan));
  box-shadow: 0 0 18px rgba(201, 116, 131, 0.7);
}

/* ---------- Hero polish ---------- */
body.sp .page-hero { position: relative; }
body.sp .page-hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-accent), rgba(94, 234, 212, 0.35), transparent);
}
body.sp .page-hero h1 {
  background: linear-gradient(180deg, #fff 30%, #e9d3d8 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
body.sp .page-hero h1 em { -webkit-text-fill-color: var(--accent); }
.sp-meta {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px;
}
.sp-meta span {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 12px; border-radius: 999px;
  border: 1px solid var(--line-2); background: rgba(12, 7, 9, 0.55); backdrop-filter: blur(8px);
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2);
}
.sp-meta span::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
}

/* ---------- Section headings ---------- */
body.sp .prose h2 {
  position: relative; padding-top: 22px;
  letter-spacing: -0.015em;
}
body.sp .prose h2::before {
  content: attr(data-sp-num);
  position: absolute; top: 0; left: 0;
  font-family: var(--mono); font-size: 11.5px; font-weight: 500; letter-spacing: 0.18em;
  color: var(--accent);
}
body.sp .prose h2[data-sp-num]::after {
  content: ""; position: absolute; top: 7px; left: 34px; width: 64px; height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
body.sp .prose h3 { color: var(--ink); }

/* ---------- Glass card base ---------- */
.sp-card, .sp-keybox, .sp-callout, .sp-steps, .sp-flow, .sp-compare > div, .sp-stat, .sp-cta-band, .sp-calc {
  position: relative;
  border-radius: var(--sp-radius);
  background: var(--sp-glass);
  border: 1px solid var(--line-2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* Gradient ring border */
.sp-keybox, .sp-cta-band, .sp-calc {
  border: 1px solid transparent;
  background:
    var(--sp-glass-strong) padding-box,
    var(--sp-ring) border-box;
  box-shadow: var(--sp-glow);
}

/* ---------- Key takeaways ---------- */
.sp-keybox { margin: 8px 0 44px; padding: 28px 30px 24px; }
.sp-keybox__label, .sp-label {
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent);
}
.sp-keybox__label::before, .sp-label::before {
  content: ""; width: 18px; height: 1px; background: var(--accent);
}
.sp-keybox ul { margin: 0; display: grid; gap: 12px; }
body.sp .prose .sp-keybox ul li { margin: 0; padding-left: 34px; color: var(--ink); font-size: 16.5px; line-height: 1.55; }
body.sp .prose .sp-keybox ul li::before {
  content: "\2713"; left: 0; top: 1px; width: 22px; height: 22px; transform: none;
  border: 1px solid var(--line-accent); border-radius: 7px;
  display: grid; place-items: center;
  font-size: 12px; color: var(--accent); background: rgba(158, 43, 64, 0.2);
}

/* ---------- Stat strip ---------- */
.sp-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin: 30px 0 38px; }
.sp-stat { padding: 20px 20px 18px; overflow: hidden; }
.sp-stat::after {
  content: ""; position: absolute; inset: auto -30% -60% auto; width: 140px; height: 140px; border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 116, 131, 0.22), transparent 70%);
}
.sp-stat b {
  display: block; font-family: var(--display); font-size: clamp(26px, 3vw, 34px); line-height: 1.05; color: var(--ink);
  letter-spacing: -0.02em;
}
.sp-stat span { display: block; margin-top: 8px; font-size: 13.5px; line-height: 1.45; color: var(--muted); }

/* ---------- Callouts ---------- */
.sp-callout { margin: 30px 0; padding: 22px 24px 20px 64px; overflow: hidden; }
.sp-callout::before {
  content: "i"; position: absolute; left: 20px; top: 20px; width: 30px; height: 30px; border-radius: 10px;
  display: grid; place-items: center;
  font-family: var(--display); font-weight: 800; font-size: 15px; color: var(--accent);
  background: rgba(158, 43, 64, 0.22); border: 1px solid var(--line-accent);
}
.sp-callout::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, var(--accent), transparent);
}
.sp-callout > strong:first-child, .sp-callout__title {
  display: block; margin-bottom: 6px; font-family: var(--display); font-size: 17px; color: var(--ink);
}
.sp-callout p { font-size: 16px; margin: 0 0 8px; }
.sp-callout p:last-child { margin-bottom: 0; }
.sp-callout--rule::before { content: "!"; color: #ffd27a; background: rgba(255, 196, 92, 0.12); border-color: rgba(255, 196, 92, 0.4); }
.sp-callout--rule::after { background: linear-gradient(180deg, #ffd27a, transparent); }
.sp-callout--tip::before { content: "\2192"; color: var(--sage); background: rgba(110, 231, 160, 0.1); border-color: rgba(110, 231, 160, 0.35); }
.sp-callout--tip::after { background: linear-gradient(180deg, var(--sage), transparent); }
.sp-callout--math::before { content: "="; color: var(--cyan); background: rgba(94, 234, 212, 0.1); border-color: rgba(94, 234, 212, 0.35); }
.sp-callout--math::after { background: linear-gradient(180deg, var(--cyan), transparent); }
.sp-callout code, .sp-formula {
  font-family: var(--mono); font-size: 14px; color: var(--cyan);
}
.sp-formula {
  display: block; margin: 10px 0; padding: 14px 16px; border-radius: 12px;
  background: rgba(0, 0, 0, 0.35); border: 1px solid rgba(94, 234, 212, 0.2); overflow-x: auto; white-space: pre;
}

/* ---------- Process steps ---------- */
.sp-steps { margin: 30px 0 36px; padding: 26px 26px 10px; counter-reset: sp-step; }
body.sp .prose ul, body.sp .prose ol, body.sp .prose ul li, body.sp .prose ol li { list-style: none; }
body.sp .prose .sp-steps ol { margin: 0; padding: 0; list-style: none; }
body.sp .prose .sp-steps ol li {
  list-style: none;
  position: relative; counter-increment: sp-step; padding: 0 0 22px 58px; margin: 0; color: var(--ink-2);
}
body.sp .prose .sp-steps ol li::before {
  content: counter(sp-step, decimal-leading-zero);
  position: absolute; left: 0; top: -2px; width: 38px; height: 38px; border-radius: 12px;
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 12.5px; color: #fff;
  background: linear-gradient(160deg, var(--maroon-bright), var(--maroon-deep));
  border: 1px solid rgba(255, 236, 240, 0.18); box-shadow: 0 8px 24px rgba(122, 31, 46, 0.45);
}
body.sp .prose .sp-steps ol li::after {
  content: ""; position: absolute; left: 19px; top: 40px; bottom: 4px; width: 1px;
  background: linear-gradient(180deg, var(--line-accent), transparent);
}
body.sp .prose .sp-steps ol li:last-child::after { display: none; }
.sp-steps li strong { display: block; color: var(--ink); font-size: 17px; margin-bottom: 2px; }

/* ---------- Architecture flow ---------- */
.sp-flow { margin: 30px 0 36px; padding: 24px; }
.sp-flow__track { display: flex; flex-wrap: wrap; align-items: stretch; gap: 10px; }
.sp-flow__node {
  flex: 1 1 140px; min-width: 130px; padding: 14px 14px 12px; border-radius: 14px;
  background: rgba(12, 7, 9, 0.6); border: 1px solid var(--line-2);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.sp-flow__node:hover { border-color: var(--line-accent); transform: translateY(-2px); }
.sp-flow__node b { display: block; font-family: var(--display); font-size: 15px; color: var(--ink); margin-bottom: 4px; }
.sp-flow__node span { display: block; font-size: 12.5px; line-height: 1.45; color: var(--muted); }
.sp-flow__node--hot { border-color: var(--line-accent); background: linear-gradient(160deg, rgba(158, 43, 64, 0.28), rgba(12, 7, 9, 0.7)); }
.sp-flow__arrow {
  flex: 0 0 18px; align-self: center; height: 2px; position: relative;
  background: linear-gradient(90deg, var(--line-accent), var(--accent));
}
.sp-flow__arrow::after {
  content: ""; position: absolute; right: -2px; top: -4px; border: 5px solid transparent; border-left-color: var(--accent);
}
.sp-flow figcaption, .sp-figcap {
  margin-top: 14px; font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em; color: var(--muted);
}
@media (max-width: 640px) {
  .sp-flow__track { flex-direction: column; }
  .sp-flow__arrow { width: 2px; height: 16px; flex-basis: 16px; align-self: center; background: linear-gradient(180deg, var(--line-accent), var(--accent)); }
  .sp-flow__arrow::after { right: -4px; top: auto; bottom: -6px; border-left-color: transparent; border-top-color: var(--accent); }
}

/* ---------- Compare (do / avoid) ---------- */
.sp-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 30px 0 36px; }
.sp-compare > div { padding: 22px 22px 14px; }
.sp-compare h4 {
  margin: 0 0 12px; font-family: var(--mono); font-size: 11.5px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase;
}
.sp-compare__do { border-color: rgba(110, 231, 160, 0.3) !important; background: linear-gradient(160deg, rgba(110, 231, 160, 0.08), rgba(21, 11, 15, 0.6)) !important; }
.sp-compare__do h4 { color: var(--sage); }
.sp-compare__avoid { border-color: rgba(201, 116, 131, 0.35) !important; background: linear-gradient(160deg, rgba(158, 43, 64, 0.16), rgba(21, 11, 15, 0.6)) !important; }
.sp-compare__avoid h4 { color: var(--accent); }
body.sp .prose .sp-compare ul li { font-size: 15.5px; }
body.sp .prose .sp-compare__do ul li::before { border-color: var(--sage); }
@media (max-width: 720px) { .sp-compare { grid-template-columns: 1fr; } }

/* ---------- Tables ---------- */
body.sp .data-table-wrap {
  position: relative; overflow-x: auto; border-radius: var(--sp-radius);
  border: 1px solid var(--line-2); background: var(--sp-glass);
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.8);
}
body.sp .prose table.data-table { margin: 0; min-width: 560px; font-size: 15px; }
body.sp .data-table caption {
  caption-side: top; text-align: left; padding: 16px 18px 12px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent);
  border-bottom: 1px solid var(--line);
}
body.sp .data-table thead th {
  position: sticky; top: 0; background: rgba(30, 17, 22, 0.96); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line-accent);
}
body.sp .data-table tbody tr { transition: background 0.2s ease; }
body.sp .data-table tbody tr:nth-child(even) { background: rgba(255, 236, 240, 0.018); }
body.sp .data-table tbody tr:hover { background: rgba(158, 43, 64, 0.12); }
body.sp .data-table tbody td:first-child { color: var(--ink); font-weight: 600; }
body.sp .data-table tbody tr:last-child td { border-bottom: 0; }

/* ---------- FAQ accordion ---------- */
.sp-faq { display: grid; gap: 10px; margin: 24px 0 32px; }
.sp-faq details {
  border-radius: 14px; border: 1px solid var(--line-2); background: var(--sp-glass);
  transition: border-color 0.25s ease, background 0.25s ease;
}
.sp-faq details[open] { border-color: var(--line-accent); background: linear-gradient(160deg, rgba(158, 43, 64, 0.14), rgba(21, 11, 15, 0.6)); }
.sp-faq summary {
  list-style: none; cursor: pointer; position: relative;
  padding: 18px 56px 18px 22px; font-family: var(--sans); font-weight: 700; font-size: 16.5px; color: var(--ink);
}
.sp-faq summary::-webkit-details-marker { display: none; }
.sp-faq summary::after {
  content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%);
  width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  font-family: var(--mono); font-size: 16px; color: var(--accent); border: 1px solid var(--line-accent);
  transition: transform 0.25s ease;
}
.sp-faq details[open] summary::after { content: "\2212"; transform: translateY(-50%) rotate(180deg); }
.sp-faq details > *:not(summary) { padding: 0 22px; }
.sp-faq details > p:last-child { padding-bottom: 20px; margin-bottom: 0; }
.sp-faq summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 14px; }

/* ---------- CTA band ---------- */
.sp-cta-band { margin: 48px 0 16px; padding: 34px 32px; overflow: hidden; }
.sp-cta-band::before {
  content: ""; position: absolute; right: -80px; top: -80px; width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 116, 131, 0.35), transparent 70%); pointer-events: none;
}
.sp-cta-band h2, .sp-cta-band h3 { margin-top: 0 !important; padding-top: 0 !important; font-size: clamp(24px, 2.6vw, 30px); }
.sp-cta-band h2::before, .sp-cta-band h2::after { display: none !important; }
.sp-cta-band p { color: var(--ink-2); max-width: 60ch; }
.sp-cta-band__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
body.sp .prose .sp-cta-band a.btn { border-bottom: 0; }
.sp-cta-band__phone {
  font-family: var(--display); font-size: 22px; color: var(--ink) !important; border-bottom: 0 !important; align-self: center;
}

/* ---------- Aside polish ---------- */
body.sp .aside-card, body.sp .aside-stack > div {
  background: var(--sp-glass); border-color: var(--line-2);
  backdrop-filter: blur(10px);
}
body.sp .aside-card--cta { box-shadow: var(--sp-glow); }
body.sp .aside-stack a[href^="#"] { transition: color 0.2s ease, border-color 0.2s ease, padding 0.2s ease, box-shadow 0.2s ease; }
body.sp .aside-stack a[href^="#"].is-active { color: var(--ink) !important; box-shadow: inset 2px 0 0 var(--accent); padding-left: 12px; }

/* ---------- Calculator surfaces ---------- */
.sp-calc { padding: 28px; margin: 0 0 40px; }
.sp-result {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-top: 20px;
}
.sp-result > div {
  padding: 18px; border-radius: 14px; background: rgba(12, 7, 9, 0.6); border: 1px solid var(--line-2);
}
.sp-result > div.is-hero {
  grid-column: 1 / -1; border-color: var(--line-accent);
  background: linear-gradient(160deg, rgba(158, 43, 64, 0.3), rgba(12, 7, 9, 0.75));
}
.sp-result b { display: block; font-family: var(--display); font-size: clamp(24px, 3vw, 32px); color: var(--ink); letter-spacing: -0.02em; }
.sp-result > div.is-hero b { font-size: clamp(34px, 5vw, 52px); }
.sp-result span { display: block; margin-top: 6px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }

body.sp input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 6px; border-radius: 99px; background: rgba(255, 236, 240, 0.1); outline: none;
  background-image: linear-gradient(90deg, var(--maroon-bright), var(--accent)); background-repeat: no-repeat; background-size: var(--sp-fill, 50%) 100%;
}
body.sp input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%; cursor: pointer;
  background: #fff; border: 3px solid var(--accent); box-shadow: 0 0 0 6px rgba(201, 116, 131, 0.18), 0 4px 14px rgba(0, 0, 0, 0.5);
}
body.sp input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 50%; cursor: pointer;
  background: #fff; border: 3px solid var(--accent); box-shadow: 0 0 0 6px rgba(201, 116, 131, 0.18);
}
body.sp input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 8px rgba(201, 116, 131, 0.35); }

/* ---------- Hub cards ---------- */
.sp-tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 30px 0 40px; }
body.sp .prose a.sp-tile, a.sp-tile {
  display: flex; flex-direction: column; gap: 10px; padding: 24px; border-radius: var(--sp-radius);
  background: var(--sp-glass); border: 1px solid var(--line-2); color: var(--ink-2); border-bottom: 1px solid var(--line-2);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
body.sp .prose a.sp-tile:hover, a.sp-tile:hover { transform: translateY(-4px); border-color: var(--line-accent); box-shadow: var(--sp-glow); }
.sp-tile__kicker { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); }
.sp-tile b { font-family: var(--display); font-size: 20px; line-height: 1.2; color: var(--ink); }
.sp-tile span:not(.sp-tile__kicker) { font-size: 14.5px; line-height: 1.55; }
.sp-tile__go { margin-top: auto; font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); }

/* ---------- Motion ---------- */
.sp-rise { opacity: 0; transform: translateY(22px); transition: opacity 0.8s cubic-bezier(.2,.7,.2,1), transform 0.8s cubic-bezier(.2,.7,.2,1); }
.sp-rise.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .sp-rise { opacity: 1; transform: none; transition: none; }
  .sp-progress { display: none; }
}
@media print {
  body.sp main::before, body.sp main::after, .sp-progress { display: none; }
  .sp-rise { opacity: 1; transform: none; }
}