/*
 * HackTheCore Premium Gold system
 * A shared visual layer for every public page. The existing component CSS stays
 * intact underneath so long-form research pages keep their original structure.
 */

:root {
  --bg-0: #030303;
  --bg-1: #070706;
  --bg-2: #0d0c09;
  --bg-3: #121008;
  --panel: rgba(13, 12, 9, 0.88);
  --panel-strong: rgba(8, 8, 7, 0.97);
  --line: rgba(231, 188, 92, 0.16);
  --line-strong: rgba(242, 204, 117, 0.42);
  --text: #f7f1e4;
  --muted: #aaa493;
  --signal: #e7bc5c;
  --signal-2: #f3d48b;
  --signal-3: #fff3c4;
  --warn: #f1c66c;
  --danger: #ff7a78;
  --gold-50: #fffaf0;
  --gold-100: #fff2cf;
  --gold-200: #f8dda1;
  --gold-300: #efca78;
  --gold-400: #e7bc5c;
  --gold-500: #c99631;
  --gold-600: #a97622;
  --gold-700: #765018;
  --ink: #050505;
  --ivory: #f7f1e4;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.58);
  --gold-shadow: 0 28px 90px rgba(180, 122, 25, 0.12);
  --radius: 20px;
  --content-width: 1240px;
  --font-display: "Iowan Old Style", "Baskerville", "Times New Roman", serif;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

html {
  color-scheme: dark;
  scroll-padding-top: 108px;
  overflow-x: clip;
}

body {
  min-width: 320px;
  background:
    radial-gradient(circle at 11% -8%, rgba(208, 157, 52, 0.14), transparent 28%),
    radial-gradient(circle at 92% 22%, rgba(239, 202, 120, 0.07), transparent 24%),
    linear-gradient(180deg, #030303 0%, #070706 36%, #0c0b08 72%, #050505 100%);
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  content: "";
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent, rgba(255, 222, 145, 0.018), transparent),
    radial-gradient(circle at 50% 0%, transparent 0 42%, rgba(0, 0, 0, 0.26) 78%, rgba(0, 0, 0, 0.62) 100%);
}

::selection {
  color: #090806;
  background: var(--gold-300);
}

:where(a, button, input, summary):focus-visible {
  outline: 2px solid var(--gold-300);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 9999;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: #080704;
  background: var(--gold-200);
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 800;
  transform: translateY(-180%);
  transition: transform 0.18s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.page-grid {
  opacity: 0.48;
  background-image:
    linear-gradient(rgba(235, 194, 103, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(235, 194, 103, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
  animation-duration: 30s;
}

.page-noise {
  opacity: 0.018;
}

.page-scanlines {
  opacity: 0.045;
}

.glow-a {
  background: rgba(208, 157, 52, 0.08);
}

.glow-b {
  background: rgba(242, 210, 139, 0.045);
}

.site-svg-ambient {
  opacity: 0.3;
  filter: sepia(1) saturate(0.7) hue-rotate(353deg);
}

.site-header {
  top: 14px;
  min-height: 68px;
  margin-bottom: 32px;
  padding: 10px 14px 10px 12px;
  border: 1px solid rgba(231, 188, 92, 0.13);
  border-radius: 999px;
  background: rgba(7, 7, 6, 0.76);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.34), inset 0 1px rgba(255, 240, 196, 0.025);
  backdrop-filter: blur(18px) saturate(120%);
  transition: background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.site-header.is-scrolled {
  background: rgba(5, 5, 4, 0.94);
  border-color: rgba(231, 188, 92, 0.25);
  box-shadow: 0 14px 45px rgba(0, 0, 0, 0.58);
}

.brand {
  gap: 9px;
  min-width: max-content;
  letter-spacing: 0.13em;
}

.brand-logo {
  width: 42px;
  height: 42px;
  filter: drop-shadow(0 0 18px rgba(231, 173, 60, 0.25));
}

.brand-name {
  color: var(--gold-50);
  font-size: 0.82rem;
  font-weight: 800;
}

.brand-mark-x {
  color: var(--gold-300);
  font-size: 0.68rem;
  text-shadow: 0 0 18px rgba(239, 202, 120, 0.44);
}

.site-nav {
  align-items: center;
  gap: 4px;
}

.site-nav a,
.premium-search-trigger {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  color: #aaa493;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  font: 700 0.73rem/1 var(--font-sans);
  letter-spacing: 0.075em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"],
.premium-search-trigger:hover {
  color: var(--gold-100);
  border-color: rgba(231, 188, 92, 0.16);
  background: rgba(231, 188, 92, 0.07);
}

.premium-search-trigger kbd {
  margin-left: 8px;
  padding: 3px 5px;
  color: #8c846f;
  border: 1px solid rgba(231, 188, 92, 0.16);
  border-radius: 5px;
  background: #0d0c09;
  font: 500 0.64rem/1 var(--font-mono);
}

.site-nav-toggle {
  color: var(--gold-100);
  border-color: rgba(231, 188, 92, 0.22);
  background: rgba(231, 188, 92, 0.07);
}

.panel,
.topic-card,
.academy-card,
.module-content-card,
.module-side-card {
  border-color: rgba(231, 188, 92, 0.14);
  background:
    linear-gradient(145deg, rgba(255, 247, 221, 0.025), transparent 35%),
    linear-gradient(180deg, rgba(14, 13, 10, 0.92), rgba(7, 7, 6, 0.97));
  box-shadow: var(--shadow), inset 0 1px rgba(255, 244, 208, 0.025);
}

.panel:hover,
.topic-card:hover,
.academy-card:hover {
  border-color: rgba(239, 202, 120, 0.33);
}

.eyebrow,
.kb-side-label,
.academy-card-meta,
.strip-label,
.signature-label {
  color: var(--gold-300);
  letter-spacing: 0.16em;
}

h1,
h2,
h3,
h4 {
  text-wrap: balance;
}

p,
li {
  text-wrap: pretty;
}

.btn {
  min-height: 48px;
  padding: 0 19px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.btn-primary {
  color: #100d06;
  border-color: var(--gold-300);
  background: linear-gradient(135deg, #fff0bd 0%, #e8bc5e 48%, #bc8228 100%);
  box-shadow: 0 12px 34px rgba(201, 150, 49, 0.2), inset 0 1px rgba(255, 255, 255, 0.55);
}

.btn-primary:hover {
  color: #050403;
  border-color: #fff1bd;
  background: linear-gradient(135deg, #fff7d8 0%, #f0ca79 52%, #d69f3a 100%);
  box-shadow: 0 16px 42px rgba(201, 150, 49, 0.3);
  transform: translateY(-2px);
}

.btn-secondary {
  color: var(--gold-100);
  border-color: rgba(231, 188, 92, 0.24);
  background: rgba(231, 188, 92, 0.045);
}

.btn-secondary:hover {
  color: #fff6db;
  border-color: rgba(239, 202, 120, 0.48);
  background: rgba(231, 188, 92, 0.1);
}

.academy-chip,
.kb-chip,
.exam-filter,
.exam-mode {
  border-color: rgba(231, 188, 92, 0.16);
  background: rgba(231, 188, 92, 0.055);
}

.exam-filter.is-active,
.exam-mode.is-active {
  color: #110e07;
  border-color: var(--gold-300);
  background: var(--gold-300);
}

.link-stack a:hover,
.module-side-list a:hover,
.breadcrumb a:hover {
  color: var(--gold-200);
}

/* Homepage */

.premium-home .page-main,
.premium-main {
  position: relative;
  z-index: 2;
}

.premium-home .site-header {
  margin-bottom: 0;
}

.premium-container {
  width: min(calc(100% - 48px), var(--content-width));
  margin-inline: auto;
}

.premium-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  color: var(--gold-300);
  font: 700 0.7rem/1.4 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.premium-kicker::before {
  width: 26px;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, var(--gold-500), var(--gold-200));
  box-shadow: 0 0 16px rgba(239, 202, 120, 0.55);
}

.premium-hero {
  position: relative;
  min-height: min(820px, calc(100vh - 96px));
  display: grid;
  grid-template-columns: minmax(0, 1.13fr) minmax(360px, 0.87fr);
  align-items: center;
  gap: clamp(44px, 7vw, 108px);
  padding-top: clamp(76px, 10vw, 126px);
  padding-bottom: clamp(72px, 9vw, 118px);
}

.premium-hero::before {
  position: absolute;
  inset: 4% auto auto 46%;
  width: min(44vw, 620px);
  aspect-ratio: 1;
  content: "";
  pointer-events: none;
  border: 1px solid rgba(231, 188, 92, 0.06);
  border-radius: 50%;
  background: repeating-radial-gradient(circle, transparent 0 58px, rgba(231, 188, 92, 0.035) 59px 60px);
  opacity: 0.8;
  mask-image: linear-gradient(to bottom, black 24%, transparent 92%);
}

.premium-hero-copy {
  position: relative;
  z-index: 2;
}

.premium-hero h1 {
  max-width: 860px;
  margin: 0;
  color: var(--gold-50);
  font-family: var(--font-display);
  font-size: clamp(3.55rem, 7.4vw, 7.15rem);
  font-weight: 500;
  line-height: 0.88;
  letter-spacing: -0.066em;
}

.premium-hero h1 .gold-line {
  display: block;
  color: transparent;
  background: linear-gradient(105deg, #fff3c5 0%, #efc970 38%, #b67a22 82%);
  background-clip: text;
  -webkit-background-clip: text;
}

.premium-hero-lede {
  max-width: 680px;
  margin: 30px 0 0;
  color: #bbb4a2;
  font-size: clamp(1.02rem, 1.4vw, 1.2rem);
  line-height: 1.75;
}

.premium-hero-lede strong {
  color: var(--gold-100);
  font-weight: 650;
}

.premium-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.premium-trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 20px;
  margin-top: 30px;
  color: #817c6f;
  font: 600 0.68rem/1.5 var(--font-mono);
  letter-spacing: 0.065em;
  text-transform: uppercase;
}

.premium-trust-row span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.premium-trust-row span::before {
  width: 5px;
  height: 5px;
  content: "";
  border-radius: 50%;
  background: var(--gold-400);
  box-shadow: 0 0 10px rgba(231, 188, 92, 0.6);
}

.premium-core {
  position: relative;
  min-height: 552px;
  display: grid;
  place-items: center;
}

.premium-core::before,
.premium-core::after {
  position: absolute;
  content: "";
  border: 1px solid rgba(231, 188, 92, 0.12);
  border-radius: 50%;
}

.premium-core::before {
  width: 430px;
  height: 430px;
  border-style: dashed;
  animation: premium-spin 44s linear infinite;
}

.premium-core::after {
  width: 324px;
  height: 324px;
  box-shadow: 0 0 80px rgba(190, 126, 28, 0.09), inset 0 0 64px rgba(231, 188, 92, 0.035);
  animation: premium-spin 30s linear infinite reverse;
}

@keyframes premium-spin {
  to { transform: rotate(360deg); }
}

.premium-core-card {
  position: relative;
  z-index: 3;
  width: min(100%, 400px);
  overflow: hidden;
  padding: 18px;
  border: 1px solid rgba(239, 202, 120, 0.28);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(23, 19, 11, 0.96), rgba(5, 5, 5, 0.98));
  box-shadow: 0 40px 110px rgba(0, 0, 0, 0.68), 0 0 90px rgba(181, 119, 26, 0.12), inset 0 1px rgba(255, 239, 197, 0.08);
}

.premium-core-card::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background: linear-gradient(115deg, transparent 28%, rgba(255, 236, 183, 0.055) 48%, transparent 67%);
  transform: translateX(-110%);
  animation: premium-sheen 7s ease-in-out infinite;
}

@keyframes premium-sheen {
  0%, 58%, 100% { transform: translateX(-110%); }
  76% { transform: translateX(110%); }
}

.premium-core-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 4px 5px 16px;
  color: #827a68;
  font: 600 0.64rem/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.premium-core-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--gold-300);
}

.premium-core-status::before {
  width: 7px;
  height: 7px;
  content: "";
  border-radius: 50%;
  background: var(--gold-400);
  box-shadow: 0 0 14px rgba(231, 188, 92, 0.85);
}

.premium-core-mark {
  position: relative;
  min-height: 212px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(231, 188, 92, 0.1);
  border-radius: 18px;
  background:
    radial-gradient(circle, rgba(197, 139, 41, 0.15), transparent 58%),
    linear-gradient(rgba(231, 188, 92, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(231, 188, 92, 0.04) 1px, transparent 1px),
    #060605;
  background-size: auto, 26px 26px, 26px 26px, auto;
}

.premium-core-mark::before,
.premium-core-mark::after {
  position: absolute;
  content: "";
  border: 1px solid rgba(239, 202, 120, 0.16);
  border-radius: 50%;
}

.premium-core-mark::before {
  width: 184px;
  height: 184px;
}

.premium-core-mark::after {
  width: 238px;
  height: 238px;
  border-style: dashed;
}

.premium-core-mark img {
  position: relative;
  z-index: 2;
  width: 174px;
  height: 174px;
  object-fit: contain;
  filter: drop-shadow(0 22px 30px rgba(0, 0, 0, 0.55)) drop-shadow(0 0 22px rgba(231, 176, 67, 0.2));
}

.premium-core-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: 8px;
}

.premium-core-metric {
  padding: 13px 14px;
  border: 1px solid rgba(231, 188, 92, 0.1);
  border-radius: 14px;
  background: rgba(255, 246, 216, 0.018);
}

.premium-core-metric span {
  display: block;
  margin-bottom: 5px;
  color: #777165;
  font: 600 0.6rem/1 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.premium-core-metric strong {
  color: var(--gold-100);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
}

.premium-stat-rail {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  margin-bottom: clamp(86px, 11vw, 150px);
  border-top: 1px solid rgba(231, 188, 92, 0.15);
  border-bottom: 1px solid rgba(231, 188, 92, 0.15);
  background: rgba(255, 245, 211, 0.012);
}

.premium-stat {
  min-height: 132px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 26px clamp(20px, 3vw, 42px);
  border-right: 1px solid rgba(231, 188, 92, 0.12);
}

.premium-stat:last-child {
  border-right: 0;
}

.premium-stat strong {
  color: var(--gold-100);
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 500;
  line-height: 1;
}

.premium-stat span {
  margin-top: 9px;
  color: #817b6d;
  font: 600 0.65rem/1.4 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.premium-section {
  padding-block: clamp(76px, 10vw, 138px);
}

.premium-section + .premium-section {
  border-top: 1px solid rgba(231, 188, 92, 0.09);
}

.premium-section-head {
  max-width: 820px;
  margin-bottom: clamp(38px, 5.5vw, 70px);
}

.premium-section-head.is-center {
  margin-inline: auto;
  text-align: center;
}

.premium-section-head.is-center .premium-kicker {
  justify-content: center;
}

.premium-section-head h2 {
  margin: 0;
  color: var(--gold-50);
  font-family: var(--font-display);
  font-size: clamp(2.45rem, 5.2vw, 5.1rem);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.premium-section-head > p:not(.premium-kicker) {
  max-width: 700px;
  margin: 22px 0 0;
  color: #a8a190;
  font-size: 1.04rem;
  line-height: 1.75;
}

.premium-section-head.is-center > p:not(.premium-kicker) {
  margin-inline: auto;
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.mode-card {
  position: relative;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: clamp(26px, 3.2vw, 40px);
  border: 1px solid rgba(231, 188, 92, 0.14);
  border-radius: 22px;
  background:
    radial-gradient(circle at 100% 0%, rgba(205, 151, 45, 0.1), transparent 36%),
    linear-gradient(150deg, rgba(18, 16, 11, 0.96), rgba(6, 6, 5, 0.98));
  box-shadow: 0 26px 68px rgba(0, 0, 0, 0.38), inset 0 1px rgba(255, 245, 213, 0.03);
  transition: border-color 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
}

.mode-card:nth-child(1),
.mode-card:nth-child(4) {
  grid-column: span 7;
}

.mode-card:nth-child(2),
.mode-card:nth-child(3) {
  grid-column: span 5;
}

.mode-card:hover {
  border-color: rgba(239, 202, 120, 0.38);
  box-shadow: 0 34px 86px rgba(0, 0, 0, 0.5), 0 0 54px rgba(190, 128, 29, 0.065);
  transform: translateY(-4px);
}

.mode-card::after {
  position: absolute;
  right: -72px;
  bottom: -72px;
  width: 210px;
  height: 210px;
  content: "";
  border: 1px solid rgba(231, 188, 92, 0.07);
  border-radius: 50%;
  box-shadow: 0 0 0 28px rgba(231, 188, 92, 0.018), 0 0 0 58px rgba(231, 188, 92, 0.012);
}

.mode-number {
  color: var(--gold-400);
  font: 600 0.69rem/1 var(--font-mono);
  letter-spacing: 0.12em;
}

.mode-card h3 {
  max-width: 440px;
  margin: auto 0 14px;
  color: var(--gold-50);
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.2vw, 3.15rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.035em;
}

.mode-card p {
  max-width: 560px;
  margin: 0;
  color: #9f9889;
  line-height: 1.68;
}

.mode-card-link {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 22px;
  color: var(--gold-200);
  font: 700 0.7rem/1.3 var(--font-mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.mode-card-link::after {
  content: "↗";
  font-size: 1rem;
  transition: transform 0.18s ease;
}

.mode-card:hover .mode-card-link::after {
  transform: translate(3px, -3px);
}

.domain-matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.domain-tile {
  position: relative;
  min-height: 210px;
  display: flex;
  flex-direction: column;
  padding: 24px;
  border: 1px solid rgba(231, 188, 92, 0.12);
  border-radius: 18px;
  background: rgba(12, 11, 9, 0.78);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.domain-tile:hover {
  border-color: rgba(239, 202, 120, 0.36);
  background: rgba(22, 18, 11, 0.9);
  transform: translateY(-3px);
}

.domain-code {
  color: #746b5a;
  font: 600 0.62rem/1 var(--font-mono);
  letter-spacing: 0.12em;
}

.domain-tile h3 {
  margin: auto 0 8px;
  color: var(--gold-100);
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.domain-tile p {
  margin: 0;
  color: #8e887b;
  font-size: 0.87rem;
  line-height: 1.56;
}

.domain-tile::after {
  position: absolute;
  top: 20px;
  right: 20px;
  color: #6b6250;
  content: "↗";
  font-size: 0.9rem;
  transition: color 0.2s ease, transform 0.2s ease;
}

.domain-tile:hover::after {
  color: var(--gold-300);
  transform: translate(2px, -2px);
}

.matrix-cta {
  min-height: 210px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  color: #100d06;
  border: 1px solid var(--gold-300);
  border-radius: 18px;
  background: linear-gradient(135deg, #f9dfa3, #d6a542 58%, #9d671d);
  box-shadow: 0 22px 55px rgba(188, 126, 35, 0.18);
}

.matrix-cta span {
  font: 800 0.65rem/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.matrix-cta strong {
  max-width: 220px;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1;
}

.premium-process {
  position: relative;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(231, 188, 92, 0.15);
  border-radius: 22px;
  background: rgba(231, 188, 92, 0.12);
}

.process-step {
  position: relative;
  min-height: 272px;
  padding: 24px 18px;
  background: #090806;
}

.process-step span {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--gold-300);
  border: 1px solid rgba(231, 188, 92, 0.18);
  border-radius: 50%;
  font: 700 0.62rem/1 var(--font-mono);
}

.process-step h3 {
  margin: 76px 0 10px;
  color: var(--gold-100);
  font-family: var(--font-display);
  font-size: 1.32rem;
  font-weight: 500;
  line-height: 1.08;
}

.process-step p {
  margin: 0;
  color: #847e72;
  font-size: 0.78rem;
  line-height: 1.55;
}

.process-step::after {
  position: absolute;
  top: 40px;
  left: 53px;
  width: calc(100% - 36px);
  height: 1px;
  content: "";
  background: linear-gradient(90deg, rgba(231, 188, 92, 0.35), rgba(231, 188, 92, 0.04));
}

.process-step:last-child::after {
  display: none;
}

.architecture-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(30px, 6vw, 80px);
  align-items: center;
}

.architecture-stack {
  display: grid;
  gap: 10px;
}

.architecture-layer {
  position: relative;
  padding: 26px 28px;
  border: 1px solid rgba(231, 188, 92, 0.13);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(19, 17, 11, 0.96), rgba(7, 7, 6, 0.96));
}

.architecture-layer:nth-child(2) {
  margin-inline: 22px;
}

.architecture-layer:nth-child(3) {
  margin-inline: 44px;
}

.architecture-layer span {
  color: var(--gold-400);
  font: 600 0.63rem/1 var(--font-mono);
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.architecture-layer strong {
  display: block;
  margin: 9px 0 6px;
  color: var(--gold-100);
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 500;
}

.architecture-layer p {
  margin: 0;
  color: #888174;
  font-size: 0.86rem;
  line-height: 1.6;
}

.premium-copy h2 {
  margin: 0;
  color: var(--gold-50);
  font-family: var(--font-display);
  font-size: clamp(2.45rem, 4.6vw, 4.8rem);
  font-weight: 500;
  line-height: 0.99;
  letter-spacing: -0.048em;
}

.premium-copy > p:not(.premium-kicker) {
  margin: 24px 0 0;
  color: #a29b8c;
  font-size: 1rem;
  line-height: 1.75;
}

.premium-checks {
  display: grid;
  gap: 13px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.premium-checks li {
  position: relative;
  padding-left: 28px;
  color: #b9b2a3;
  line-height: 1.55;
}

.premium-checks li::before {
  position: absolute;
  top: 0.56em;
  left: 0;
  width: 13px;
  height: 7px;
  content: "";
  border-bottom: 1px solid var(--gold-300);
  border-left: 1px solid var(--gold-300);
  transform: rotate(-45deg);
}

.route-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.route-card {
  min-height: 252px;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border: 1px solid rgba(231, 188, 92, 0.13);
  border-radius: 18px;
  background:
    linear-gradient(155deg, rgba(255, 245, 211, 0.022), transparent 42%),
    #090806;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.route-card:hover {
  border-color: rgba(239, 202, 120, 0.36);
  transform: translateY(-3px);
}

.route-card span {
  color: #7d7462;
  font: 600 0.62rem/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.route-card h3 {
  margin: auto 0 10px;
  color: var(--gold-100);
  font-family: var(--font-display);
  font-size: 1.72rem;
  font-weight: 500;
}

.route-card p {
  margin: 0;
  color: #8b8477;
  font-size: 0.86rem;
  line-height: 1.58;
}

.ethics-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(42px, 8vw, 110px);
  overflow: hidden;
  padding: clamp(36px, 7vw, 88px);
  border: 1px solid rgba(239, 202, 120, 0.24);
  border-radius: 28px;
  background:
    radial-gradient(circle at 90% 0%, rgba(210, 154, 48, 0.15), transparent 36%),
    linear-gradient(140deg, rgba(21, 18, 11, 0.98), rgba(6, 6, 5, 0.99));
  box-shadow: var(--gold-shadow), inset 0 1px rgba(255, 245, 211, 0.05);
}

.ethics-panel::after {
  position: absolute;
  right: -150px;
  bottom: -260px;
  width: 530px;
  height: 530px;
  content: "";
  border: 1px solid rgba(239, 202, 120, 0.08);
  border-radius: 50%;
  box-shadow: 0 0 0 52px rgba(239, 202, 120, 0.018), 0 0 0 104px rgba(239, 202, 120, 0.012);
}

.ethics-list {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 10px;
}

.ethics-item {
  padding: 22px;
  border: 1px solid rgba(231, 188, 92, 0.11);
  border-radius: 16px;
  background: rgba(3, 3, 3, 0.36);
}

.ethics-item strong {
  display: block;
  margin-bottom: 7px;
  color: var(--gold-100);
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 500;
}

.ethics-item p {
  margin: 0;
  color: #8f887a;
  font-size: 0.84rem;
  line-height: 1.58;
}

.premium-faq {
  max-width: 900px;
  margin-inline: auto;
}

.premium-faq details {
  border-top: 1px solid rgba(231, 188, 92, 0.13);
}

.premium-faq details:last-child {
  border-bottom: 1px solid rgba(231, 188, 92, 0.13);
}

.premium-faq summary {
  position: relative;
  padding: 24px 52px 24px 0;
  color: var(--gold-100);
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  font-weight: 500;
  cursor: pointer;
  list-style: none;
}

.premium-faq summary::-webkit-details-marker {
  display: none;
}

.premium-faq summary::after {
  position: absolute;
  top: 50%;
  right: 4px;
  content: "+";
  color: var(--gold-300);
  font: 300 1.5rem/1 var(--font-sans);
  transform: translateY(-50%);
}

.premium-faq details[open] summary::after {
  content: "−";
}

.premium-faq details p {
  max-width: 760px;
  margin: -4px 0 26px;
  color: #9a9385;
  line-height: 1.72;
}

.premium-cta {
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 8vw, 96px);
  border: 1px solid var(--gold-300);
  border-radius: 28px;
  background: linear-gradient(128deg, #f8dfa5 0%, #d8a944 52%, #a76f22 100%);
  box-shadow: 0 32px 90px rgba(183, 121, 28, 0.2);
}

.premium-cta::before {
  position: absolute;
  inset: -60% auto auto 56%;
  width: 520px;
  height: 520px;
  content: "";
  border: 1px solid rgba(30, 20, 5, 0.16);
  border-radius: 50%;
  box-shadow: 0 0 0 58px rgba(30, 20, 5, 0.045), 0 0 0 116px rgba(30, 20, 5, 0.028);
}

.premium-cta > * {
  position: relative;
  z-index: 2;
}

.premium-cta .premium-kicker {
  color: #3a280e;
}

.premium-cta .premium-kicker::before {
  background: #3a280e;
}

.premium-cta h2 {
  max-width: 800px;
  margin: 0;
  color: #100d07;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.8vw, 5.5rem);
  font-weight: 600;
  line-height: 0.92;
  letter-spacing: -0.055em;
}

.premium-cta p {
  max-width: 620px;
  margin: 24px 0 0;
  color: rgba(25, 17, 5, 0.75);
  font-weight: 600;
  line-height: 1.7;
}

.premium-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.premium-cta .btn-primary {
  color: var(--gold-100);
  border-color: #171107;
  background: #0d0b07;
  box-shadow: 0 14px 32px rgba(28, 18, 3, 0.22);
}

.premium-cta .btn-secondary {
  color: #1b1307;
  border-color: rgba(27, 19, 7, 0.4);
  background: rgba(255, 248, 221, 0.22);
}

/* Shared footer */

.premium-footer,
.site-footer {
  position: relative;
  z-index: 2;
  width: min(calc(100% - 48px), var(--content-width));
  max-width: var(--content-width);
  margin: clamp(70px, 10vw, 140px) auto 0;
  padding: 38px 0 34px;
  border-top: 1px solid rgba(231, 188, 92, 0.14);
}

.premium-footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 0.6fr);
  gap: 38px;
}

.premium-footer-brand {
  max-width: 360px;
}

.premium-footer-brand strong {
  display: block;
  color: var(--gold-100);
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 500;
}

.premium-footer-brand p,
.premium-footer-bottom {
  color: #9b9384;
  font-size: 0.8rem;
  line-height: 1.65;
}

.premium-footer-group strong {
  display: block;
  margin-bottom: 14px;
  color: var(--gold-300);
  font: 700 0.64rem/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.premium-footer-group a {
  display: block;
  width: fit-content;
  margin: 10px 0;
  color: #938c7e;
  font-size: 0.84rem;
}

.premium-footer-group a:hover {
  color: var(--gold-100);
}

.premium-footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid rgba(231, 188, 92, 0.08);
}

.site-footer p {
  color: #777165;
}

/* Methodology page */

.methodology-hero {
  padding-top: clamp(62px, 9vw, 120px);
  padding-bottom: clamp(70px, 9vw, 118px);
}

.methodology-hero h1 {
  max-width: 1040px;
  margin: 0;
  color: var(--gold-50);
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 7vw, 7rem);
  font-weight: 500;
  line-height: 0.91;
  letter-spacing: -0.06em;
}

.methodology-hero > p:not(.premium-kicker) {
  max-width: 780px;
  margin: 28px 0 0;
  color: #a7a091;
  font-size: clamp(1.02rem, 1.5vw, 1.22rem);
  line-height: 1.76;
}

.methodology-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.principle-card {
  min-height: 265px;
  padding: 28px;
  border: 1px solid rgba(231, 188, 92, 0.13);
  border-radius: 18px;
  background: #090806;
}

.principle-card span {
  color: var(--gold-400);
  font: 600 0.62rem/1 var(--font-mono);
  letter-spacing: 0.12em;
}

.principle-card h2,
.principle-card h3 {
  margin: 74px 0 12px;
  color: var(--gold-100);
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 500;
}

.principle-card p {
  margin: 0;
  color: #8f887a;
  font-size: 0.9rem;
  line-height: 1.65;
}

.editorial-table {
  overflow: hidden;
  border: 1px solid rgba(231, 188, 92, 0.14);
  border-radius: 20px;
}

.editorial-row {
  display: grid;
  grid-template-columns: 0.35fr 0.65fr;
  gap: 38px;
  padding: 26px 30px;
  border-bottom: 1px solid rgba(231, 188, 92, 0.1);
  background: rgba(10, 9, 7, 0.82);
}

.editorial-row:last-child {
  border-bottom: 0;
}

.editorial-row strong {
  color: var(--gold-200);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
}

.editorial-row p {
  margin: 0;
  color: #979082;
  line-height: 1.68;
}

/* Search experience */

.premium-search-dialog {
  width: min(760px, calc(100% - 28px));
  max-height: min(720px, calc(100vh - 40px));
  padding: 0;
  color: var(--text);
  border: 1px solid rgba(239, 202, 120, 0.28);
  border-radius: 24px;
  background: rgba(8, 8, 7, 0.98);
  box-shadow: 0 40px 140px rgba(0, 0, 0, 0.84), 0 0 80px rgba(188, 126, 35, 0.11);
}

.premium-search-dialog::backdrop {
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(8px);
}

.premium-search-shell {
  display: grid;
  width: 100%;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr) auto;
  max-height: min(720px, calc(100vh - 40px));
  overflow: hidden;
}

.premium-search-head {
  display: flex;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  align-items: center;
  gap: 12px;
  padding: 18px;
  border-bottom: 1px solid rgba(231, 188, 92, 0.12);
}

.premium-search-input {
  min-width: 0;
  flex: 1;
  height: 50px;
  padding: 0 16px;
  color: var(--gold-50);
  border: 1px solid rgba(231, 188, 92, 0.17);
  border-radius: 14px;
  outline: none;
  background: rgba(255, 247, 221, 0.035);
  font: 500 1rem/1 var(--font-sans);
}

.premium-search-input:focus {
  border-color: rgba(239, 202, 120, 0.52);
  box-shadow: 0 0 0 3px rgba(231, 188, 92, 0.07);
}

.premium-search-close {
  width: 44px;
  height: 44px;
  color: #a69e8c;
  border: 1px solid rgba(231, 188, 92, 0.14);
  border-radius: 50%;
  background: transparent;
  font-size: 1.2rem;
  cursor: pointer;
}

.premium-search-results {
  min-width: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 10px;
}

.premium-search-item {
  display: grid;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  padding: 16px;
  border: 1px solid transparent;
  border-radius: 14px;
}

.premium-search-item:hover,
.premium-search-item:focus-visible {
  border-color: rgba(231, 188, 92, 0.18);
  background: rgba(231, 188, 92, 0.055);
  outline: 2px solid var(--gold-300);
  outline-offset: -2px;
}

.premium-search-item strong {
  display: block;
  margin-bottom: 5px;
  color: var(--gold-100);
  font-size: 0.94rem;
}

.premium-search-item p {
  margin: 0;
  color: #858073;
  font-size: 0.78rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.premium-search-item span {
  color: #9f9889;
  font: 600 0.65rem/1.4 var(--font-mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.premium-search-empty {
  padding: 44px 20px;
  color: #8e8778;
  text-align: center;
}

.premium-search-foot {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 18px;
  color: #9b9384;
  border-top: 1px solid rgba(231, 188, 92, 0.1);
  font: 600 0.62rem/1.4 var(--font-mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.reading-progress {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  pointer-events: none;
  background: transparent;
}

.reading-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--gold-700), var(--gold-200), var(--gold-500));
  box-shadow: 0 0 12px rgba(239, 202, 120, 0.6);
}

.back-to-top {
  position: fixed;
  z-index: 40;
  right: 22px;
  bottom: 22px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--gold-200);
  border: 1px solid rgba(231, 188, 92, 0.2);
  border-radius: 50%;
  background: rgba(8, 8, 7, 0.88);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.46);
  backdrop-filter: blur(12px);
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  border-color: rgba(239, 202, 120, 0.48);
}

.premium-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.72s ease, transform 0.72s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.premium-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  .site-nav a,
  .premium-search-trigger {
    padding-inline: 9px;
    letter-spacing: 0.045em;
  }

  .premium-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(330px, 0.8fr);
    gap: 44px;
  }

  .premium-process {
    grid-template-columns: repeat(4, 1fr);
  }

  .process-step:nth-child(4)::after {
    display: none;
  }

  .domain-matrix {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 980px) {
  .site-header {
    top: 8px;
    width: calc(100% - 24px);
    padding: 9px 10px;
  }

  .site-nav {
    top: calc(100% + 10px);
    right: 0;
    left: 0;
    gap: 4px;
    padding: 12px;
    border: 1px solid rgba(231, 188, 92, 0.18);
    border-radius: 20px;
    background: rgba(7, 7, 6, 0.98);
    box-shadow: 0 26px 70px rgba(0, 0, 0, 0.68);
  }

  .site-nav a,
  .premium-search-trigger {
    width: 100%;
    justify-content: flex-start;
    min-height: 44px;
    padding-inline: 14px;
  }

  .premium-hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 86px;
  }

  .premium-hero-copy {
    max-width: 820px;
  }

  .premium-core {
    min-height: 490px;
  }

  .premium-core-card {
    width: min(100%, 520px);
  }

  .mode-card:nth-child(n) {
    grid-column: span 6;
  }

  .architecture-grid,
  .ethics-panel {
    grid-template-columns: 1fr;
  }

  .route-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .premium-footer-grid {
    grid-template-columns: 1.2fr repeat(2, 0.7fr);
  }

  .premium-footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .premium-container {
    width: min(calc(100% - 32px), var(--content-width));
  }

  .premium-hero {
    padding-top: 68px;
  }

  .premium-hero h1 {
    font-size: clamp(3.15rem, 16vw, 5.6rem);
  }

  .premium-core {
    min-height: 430px;
  }

  .premium-core::before {
    width: 360px;
    height: 360px;
  }

  .premium-core::after {
    width: 278px;
    height: 278px;
  }

  .premium-stat-rail {
    grid-template-columns: repeat(2, 1fr);
  }

  .premium-stat:nth-child(2) {
    border-right: 0;
  }

  .premium-stat:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(231, 188, 92, 0.12);
  }

  .mode-card:nth-child(n) {
    grid-column: 1 / -1;
    min-height: 260px;
  }

  .domain-matrix {
    grid-template-columns: repeat(2, 1fr);
  }

  .premium-process {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-step:nth-child(even)::after {
    display: none;
  }

  .process-step:nth-child(4)::after {
    display: none;
  }

  .process-step h3 {
    margin-top: 52px;
  }

  .route-grid,
  .methodology-principles {
    grid-template-columns: 1fr;
  }

  .premium-footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .premium-footer-brand {
    grid-column: 1 / -1;
  }

  .editorial-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (max-width: 520px) {
  .brand-name {
    display: inline;
    font-size: 0.72rem;
  }

  .premium-hero-actions .btn,
  .premium-cta-actions .btn {
    width: 100%;
  }

  .premium-core {
    min-height: 402px;
  }

  .premium-core::before {
    width: 310px;
    height: 310px;
  }

  .premium-core::after {
    width: 250px;
    height: 250px;
  }

  .premium-core-card {
    padding: 12px;
    border-radius: 22px;
  }

  .premium-core-mark {
    min-height: 180px;
  }

  .premium-core-mark img {
    width: 142px;
    height: 142px;
  }

  .premium-core-metric {
    padding: 11px;
  }

  .premium-stat {
    min-height: 112px;
    padding: 22px 18px;
  }

  .premium-section {
    padding-block: 74px;
  }

  .domain-matrix,
  .premium-process {
    grid-template-columns: 1fr;
  }

  .process-step {
    min-height: 220px;
  }

  .process-step::after {
    display: none;
  }

  .architecture-layer:nth-child(n) {
    margin-inline: 0;
  }

  .ethics-panel,
  .premium-cta {
    padding: 30px 24px;
    border-radius: 22px;
  }

  .premium-footer-grid {
    grid-template-columns: 1fr;
  }

  .premium-footer-bottom {
    flex-direction: column;
  }

  .premium-search-foot {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .premium-reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .page-noise,
  .page-grid,
  .page-scanlines,
  .glow,
  .site-svg-ambient,
  .premium-search-trigger,
  .back-to-top,
  .reading-progress {
    display: none !important;
  }

  body {
    color: #16130d;
    background: #fff;
  }

  .site-header,
  .panel,
  .module-content-card,
  .module-side-card {
    color: #16130d;
    border-color: #c9bea6;
    background: #fff;
    box-shadow: none;
  }
}