:root {
  --bg: #07080b;
  --bg-2: #0b0d12;
  --surface: rgba(255,255,255,.035);
  --surface-strong: rgba(15,17,24,.92);
  --border: rgba(255,255,255,.1);
  --border-subtle: rgba(255,255,255,.055);
  --text: #f7f8fb;
  --text-2: #ccd2dd;
  --text-3: #9299a7;
  --accent: #7170ff;
  --accent-2: #5ee7f2;
  --accent-3: #aab1ff;
  --warning: #ffbd68;
  --danger: #ff7185;
  --success: #65e3a5;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 82% 8%, rgba(113,112,255,.13), transparent 0 28%),
    radial-gradient(circle at 8% 42%, rgba(94,231,242,.07), transparent 0 22%),
    linear-gradient(180deg, #0a0b0f 0%, var(--bg) 56%, #06070a 100%);
  color: var(--text);
  line-height: 1.55;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at center, #000 20%, transparent 84%);
  opacity: .55;
}
img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.shell { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 9px;
  background: #fff;
  color: #090a0d;
  transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(7,8,11,.8);
  backdrop-filter: blur(16px);
}
.nav-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand { display: flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 700; }
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.025));
  box-shadow: inset 0 0 22px rgba(113,112,255,.12), 0 0 24px rgba(113,112,255,.08);
}
.nav-links { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.nav-link {
  padding: 9px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: rgba(255,255,255,.018);
  color: var(--text-2);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}
.nav-link:hover, .nav-link[aria-current="page"] {
  color: #fff;
  border-color: rgba(113,112,255,.45);
  background: rgba(113,112,255,.13);
}

.hero { padding: 76px 0 48px; position: relative; }
.kicker {
  display: inline-flex;
  gap: 9px;
  align-items: center;
  margin-bottom: 20px;
  padding: 8px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: rgba(255,255,255,.025);
  color: var(--text-2);
  font-size: 13px;
}
.kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 18px rgba(94,231,242,.65);
}
h1, h2, h3 { text-wrap: balance; overflow-wrap: anywhere; hyphens: auto; }
h1 { margin: 0; max-width: 980px; font-size: clamp(2.55rem, 6.8vw, 4.8rem); line-height: .99; letter-spacing: -1.8px; }
.lead { max-width: 820px; margin: 24px 0 0; color: var(--text-2); font-size: 18px; line-height: 1.75; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.button {
  min-height: 47px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 11px;
  font-size: 14px;
  font-weight: 700;
}
.button-primary { color: #fff; background: linear-gradient(135deg, var(--accent), #5759c8); border-color: transparent; box-shadow: 0 14px 34px rgba(113,112,255,.22); }
.button-secondary { background: rgba(255,255,255,.025); }
.button:hover { transform: translateY(-1px); }

.hero-split { display: grid; grid-template-columns: 1.02fr .98fr; gap: 26px; align-items: center; }
.hero-copy { min-width: 0; }
.hero-visual {
  min-height: 430px;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(113,112,255,.2);
  border-radius: 26px;
  background:
    radial-gradient(circle at 50% 44%, rgba(113,112,255,.18), transparent 34%),
    linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.01));
  box-shadow: 0 28px 70px rgba(0,0,0,.35), inset 0 0 40px rgba(113,112,255,.08);
}
.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(7,8,11,.28));
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; position: relative; z-index: 1; }
.hero-visual.diagram-frame { min-height: 0; }
.hero-visual.diagram-frame img { height: auto; object-fit: contain; }

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 12px 0 54px;
}
.proof-item { padding: 16px 18px; border: 1px solid var(--border-subtle); border-radius: 15px; background: rgba(255,255,255,.022); }
.proof-item strong { display: block; margin-bottom: 5px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-3); }
.proof-item span { color: var(--text-3); font-size: 13px; }

.section { padding: 54px 0; position: relative; }
.section + .section { border-top: 1px solid var(--border-subtle); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 26px; }
.section-label { color: var(--accent-3); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; font-weight: 700; }
h2 { margin: 8px 0 0; max-width: 820px; font-size: clamp(2rem, 4.6vw, 3.2rem); line-height: 1.05; letter-spacing: -1px; }
.section-intro { max-width: 650px; margin: 12px 0 0; color: var(--text-2); line-height: 1.75; }
.text-link { color: var(--accent-2); font-size: 14px; font-weight: 700; white-space: nowrap; }

.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.card {
  position: relative;
  overflow: hidden;
  padding: 23px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(15,17,24,.86), rgba(9,10,14,.9)),
    url('texture-cyberpunk-v1.webp') center/cover;
  box-shadow: inset 0 0 28px rgba(113,112,255,.05);
}
.card::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(135deg, rgba(113,112,255,.04), transparent 42%); }
.card > * { position: relative; z-index: 1; }
.card-number, .eyebrow { color: var(--accent-2); font-family: ui-monospace, "Cascadia Code", monospace; font-size: 11px; letter-spacing: .09em; text-transform: uppercase; }
.card h3 { margin: 14px 0 9px; font-size: 20px; line-height: 1.2; }
.card p { margin: 0; color: var(--text-2); font-size: 14px; line-height: 1.75; }
.card ul { margin: 13px 0 0; padding-left: 18px; color: var(--text-3); font-size: 13px; line-height: 1.75; }
.card:hover { border-color: rgba(113,112,255,.3); }

.process { display: grid; grid-template-columns: repeat(6, minmax(0,1fr)); gap: 10px; counter-reset: step; }
.process-step { min-height: 190px; padding: 18px; border: 1px solid var(--border-subtle); border-radius: 17px; background: rgba(255,255,255,.021); }
.process-step::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 36px; color: var(--accent-2); font: 700 11px/1 ui-monospace, monospace; }
.process-step strong { display: block; margin-bottom: 8px; font-size: 14px; }
.process-step span { color: var(--text-3); font-size: 12px; line-height: 1.55; }

.article-card { padding: 0; }
.article-card-visual { min-height: 210px; display: grid; place-items: center; overflow: hidden; border-bottom: 1px solid var(--border); background: #0b0d12; }
.article-card-visual img { width: 100%; height: 100%; object-fit: cover; }
.article-card-body { padding: 23px; }
.article-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; color: var(--text-3); font-size: 12px; }
.article-card h3 { margin: 0 0 10px; font-size: 21px; }
.article-card p { margin: 0 0 18px; color: var(--text-2); font-size: 14px; line-height: 1.7; }
.article-card a { color: var(--accent-2); font-weight: 700; font-size: 14px; }

.diagram { overflow: hidden; border: 1px solid var(--border); border-radius: 22px; background: #090b10; box-shadow: 0 22px 60px rgba(0,0,0,.35); }
.diagram img { display: block; width: 100%; height: auto; }

.callout {
  margin: 24px 0;
  padding: 19px 21px;
  border: 1px solid rgba(113,112,255,.27);
  border-left: 3px solid var(--accent);
  border-radius: 14px;
  background: rgba(113,112,255,.075);
  color: var(--text-2);
}
.callout strong { color: #fff; }
.callout-warning { border-color: rgba(255,189,104,.25); border-left-color: var(--warning); background: rgba(255,189,104,.06); }
.callout-danger { border-color: rgba(255,113,133,.25); border-left-color: var(--danger); background: rgba(255,113,133,.055); }

.finding { display: grid; grid-template-columns: 160px 1fr; gap: 18px; padding: 23px; border: 1px solid rgba(255,189,104,.24); border-radius: 20px; background: rgba(255,189,104,.045); }
.finding-score { display: grid; place-items: center; align-content: center; min-height: 150px; border: 1px solid rgba(255,189,104,.22); border-radius: 16px; }
.finding-score strong { color: var(--warning); font-size: 30px; }
.finding-score span { color: var(--text-3); font-size: 11px; text-transform: uppercase; letter-spacing: .09em; }
.finding-body h3 { margin-top: 0; }
.finding-body dl { display: grid; grid-template-columns: 120px 1fr; gap: 8px 14px; margin: 16px 0 0; }
.finding-body dt { color: var(--text-3); font-size: 12px; }
.finding-body dd { margin: 0; color: var(--text-2); font-size: 13px; }

.article-shell { width: min(calc(100% - 40px), 1060px); margin-inline: auto; }
.article-hero { padding: 72px 0 34px; }
.article-hero h1 { max-width: 900px; font-size: clamp(2.5rem, 6vw, 4.4rem); }
.article-meta-line { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 23px; color: var(--text-3); font-size: 13px; }
.article-layout { display: grid; grid-template-columns: 220px minmax(0,1fr); gap: 38px; align-items: start; padding: 42px 0 76px; }
.article-toc { position: sticky; top: 100px; padding: 17px; border: 1px solid var(--border-subtle); border-radius: 16px; background: rgba(255,255,255,.018); }
.article-toc strong { display: block; margin-bottom: 12px; font-size: 12px; color: var(--accent-3); text-transform: uppercase; letter-spacing: .08em; }
.article-toc a { display: block; padding: 7px 0; color: var(--text-3); font-size: 12px; }
.article-toc a:hover { color: var(--text); }
.article-content { min-width: 0; }
.article-content h2 { margin: 54px 0 17px; font-size: clamp(1.7rem, 3.6vw, 2.45rem); }
.article-content h2:first-child { margin-top: 0; }
.article-content h3 { margin: 30px 0 10px; font-size: 20px; }
.article-content p, .article-content li { color: var(--text-2); font-size: 16px; line-height: 1.85; }
.article-content ul, .article-content ol { padding-left: 23px; }
.article-content a { color: var(--accent-2); text-decoration: underline; text-underline-offset: 3px; }
.article-content code { padding: 2px 5px; border-radius: 5px; background: rgba(255,255,255,.07); color: var(--accent-3); }
.checklist { padding: 0; list-style: none; }
.checklist li { position: relative; padding: 12px 0 12px 34px; border-bottom: 1px solid var(--border-subtle); }
.checklist li::before { content: "✓"; position: absolute; left: 5px; color: var(--success); font-weight: 800; }
.sources { margin-top: 55px; padding-top: 25px; border-top: 1px solid var(--border); }
.sources li { font-size: 13px; }

.glossary-tools { position: sticky; top: 72px; z-index: 20; padding: 18px 0; background: linear-gradient(180deg, rgba(7,8,11,.97), rgba(7,8,11,.9), transparent); }
.search-box { width: 100%; min-height: 52px; padding: 0 17px; border: 1px solid var(--border); border-radius: 13px; background: rgba(255,255,255,.035); color: var(--text); outline: none; }
.search-box:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(113,112,255,.12); }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.filter-button { padding: 8px 11px; border: 1px solid var(--border-subtle); border-radius: 999px; background: rgba(255,255,255,.018); color: var(--text-3); cursor: pointer; font-size: 12px; }
.filter-button:hover, .filter-button.is-active { border-color: rgba(113,112,255,.45); background: rgba(113,112,255,.13); color: #fff; }
.glossary-status { margin: 13px 0 0; color: var(--text-3); font-size: 12px; }
.term-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; padding: 20px 0 70px; }
.term-card { border: 1px solid var(--border); border-radius: 17px; background: rgba(255,255,255,.023); overflow: hidden; }
.term-card[hidden] { display: none; }
.term-card summary { min-height: 92px; display: flex; flex-direction: column; justify-content: center; padding: 17px 48px 17px 19px; cursor: pointer; list-style: none; position: relative; }
.term-card summary::-webkit-details-marker { display: none; }
.term-card summary::after { content: "+"; position: absolute; right: 19px; top: 50%; translate: 0 -50%; color: var(--accent-2); font-size: 23px; }
.term-card[open] summary::after { content: "−"; }
.term-card h2 { margin: 0; font-size: 19px; letter-spacing: -.3px; }
.term-name-en { margin-top: 4px; color: var(--text-3); font-size: 12px; }
.term-body { padding: 0 19px 19px; border-top: 1px solid var(--border-subtle); }
.term-body p { color: var(--text-2); font-size: 14px; line-height: 1.72; }
.term-body strong { color: var(--accent-3); }
.term-tag { display: inline-flex; margin-top: 12px; padding: 5px 8px; border: 1px solid var(--border-subtle); border-radius: 999px; color: var(--text-3); font-size: 10px; text-transform: uppercase; letter-spacing: .07em; }
.term-diagram {
  margin: 16px 0 18px;
  overflow: hidden;
  border: 1px solid rgba(113,112,255,.2);
  border-radius: 13px;
  background: linear-gradient(135deg, rgba(113,112,255,.07), rgba(94,231,242,.025));
}
.term-diagram svg { display: block; width: 100%; aspect-ratio: 420 / 132; color: var(--accent-2); }
.term-diagram figcaption { padding: 9px 12px 11px; border-top: 1px solid var(--border-subtle); color: var(--text-3); font-size: 11px; line-height: 1.5; }
.empty-state { display: none; padding: 30px; border: 1px dashed var(--border); border-radius: 16px; color: var(--text-3); text-align: center; }
.empty-state.is-visible { display: block; }

.site-footer { border-top: 1px solid var(--border-subtle); padding: 34px 0 58px; color: var(--text-3); font-size: 13px; }
.footer-grid { display: flex; justify-content: space-between; gap: 22px; align-items: start; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-links a:hover { color: var(--text); }

:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; }

@media (max-width: 980px) {
  .hero-split, .article-layout { grid-template-columns: 1fr; }
  .hero-visual { min-height: 360px; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .process { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .article-toc { position: static; }
}

@media (max-width: 760px) {
  .shell, .article-shell { width: min(calc(100% - 24px), var(--max)); }
  .nav-inner { min-height: 64px; flex-direction: column; align-items: flex-start; padding: 11px 0; }
  .nav-links { width: 100%; flex-wrap: nowrap; overflow-x: auto; padding: 0 18px 4px 0; scrollbar-width: none; mask-image: linear-gradient(90deg, #000 88%, transparent); }
  .nav-links::-webkit-scrollbar { display: none; }
  .hero, .article-hero { padding-top: 50px; }
  h1 { font-size: clamp(2.35rem, 11vw, 3.2rem); }
  .glossary-page h1 { font-size: 2.05rem; overflow-wrap: normal; hyphens: none; text-wrap: wrap; }
  .lead { font-size: 16px; }
  .hero-visual { min-height: 300px; }
  .proof-strip, .grid-2, .grid-3, .grid-4, .term-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .section { padding: 42px 0; }
  .section-head, .footer-grid { flex-direction: column; align-items: flex-start; }
  .finding { grid-template-columns: 1fr; }
  .finding-score { min-height: 105px; }
  .finding-body dl { grid-template-columns: 1fr; }
  .glossary-tools { top: 118px; }
}

@media (max-width: 430px) {
  .process { grid-template-columns: 1fr; }
  .process-step { min-height: 0; }
  .process-step::before { margin-bottom: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}