/* ============================================================
   infosec-lab.com — design system v20 (dark)
   Pure-black enterprise security style: black surfaces,
   white text, red accent. Benchmarks: bi.one, pt.security.
   ============================================================ */

/* ---------- Fonts (self-hosted) ----------
   TT Positive — the actual typeface used on ptsecurity.com.
   PT Mono kept for labels/codes. No blue-tinted grays anywhere. */
@font-face { font-family: "TT Positive"; src: url("../fonts/tt-positive-regular.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "TT Positive"; src: url("../fonts/tt-positive-medium.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "TT Positive"; src: url("../fonts/tt-positive-demibold.woff2") format("woff2"); font-weight: 600 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Unbounded"; src: url("../fonts/unbounded-700.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "PT Mono"; src: url("../fonts/pt-mono-latin.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: "PT Mono"; src: url("../fonts/pt-mono-cyrillic.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }

/* ---------- Tokens ---------- */
:root {
  /* Surfaces (dark-first, neutral: no blue channel bias) */
  --bg: #000000;           /* page: pure black — hero photo, logo and banner art all sit on #000 */
  --surface: #151515;      /* cards */
  --wash: #1c1c1c;         /* raised panels, hovers */
  --wash-2: #232323;       /* caps, sub-panels */
  --ink: #f5f5f5;          /* primary text (white) */
  --ink-2: #c9c9c9;        /* secondary text */
  --ink-3: #949494;        /* muted text */
  --line: #262626;
  --line-2: #383838;
  /* Brand red — the only accent hue (no blue anywhere) */
  --red: #d92c27;          /* buttons */
  --red-hover: #c4262e;
  --red-text: #ff6a5e;     /* links/accents on dark (7:1 on bg) */
  --red-soft: rgba(217, 44, 39, .12);
  --red-line: rgba(255, 106, 94, .35);
  --red-bright: #ff5347;
  /* Deepest band */
  --deep: #000000;
  --deep-line: #1f1f1f;
  --deep-ink: #f5f5f5;
  --deep-muted: #949494;
  /* Semantic */
  --nav-h: 68px;
  --sans: "TT Positive", "PT Root UI", -apple-system, "Segoe UI", sans-serif;
  --mono: "PT Mono", ui-monospace, "Courier New", monospace;
  --shadow-s: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow-m: 0 2px 8px rgba(0, 0, 0, .45);
  --shadow-l: 0 8px 32px rgba(0, 0, 0, .55);
  --tr: 180ms cubic-bezier(.4, 0, .2, 1);
  --logo-filter: none; /* photo logo with black bg blends into dark surfaces */
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }
body {
  background: var(--bg);
  color: var(--ink);
  font: 400 16.5px/1.65 var(--sans);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; background: none; border: 0; cursor: pointer; color: inherit; }
table { border-collapse: collapse; width: 100%; }
b, strong { font-weight: 700; }

::selection { background: var(--red); color: #fff; }
:focus-visible { outline: 2px solid var(--red-bright); outline-offset: 2px; border-radius: 2px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--red); color: #fff;
  padding: 10px 16px; font: 500 14px var(--sans); border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

.wrap { max-width: 1264px; margin: 0 auto; padding: 0 32px; }
.mt-32 { margin-top: 32px; }

/* Pure black everywhere so the hero photo, logo and banner art (all #000) blend seamlessly */

/* ============================================================
   Header
   ============================================================ */
.topline { background: #000; color: var(--ink-3); font: 400 12.5px/1.4 var(--sans); border-bottom: 1px solid var(--deep-line); }
.topline .wrap {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding-top: 8px; padding-bottom: 8px;
}
.topline .wrap > span:first-child { color: var(--ink-3); }
.topline-right { display: flex; gap: 20px; flex-wrap: wrap; }
.topline a { color: var(--ink-2); transition: color var(--tr); }
.topline a:hover { color: #fff; }

.mainbar {
  position: sticky; top: 0; z-index: 40;
  background: rgba(0, 0, 0, .88);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.mainbar .nav { display: flex; align-items: center; gap: 28px; min-height: var(--nav-h); }
.brand { display: flex; align-items: center; gap: 12px; margin-right: 8px; flex: none; }
.logo-img { width: 36px; height: 36px; object-fit: contain; filter: var(--logo-filter); }
.brand-name { font: 700 16px/1 "Unbounded", var(--sans); letter-spacing: 0.01em; white-space: nowrap; color: var(--ink); }
.brand-name em { font-style: normal; color: var(--red-text); }

.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a {
  display: inline-flex; align-items: center; padding: 10px 14px; border-radius: 8px;
  font: 500 15px/1 var(--sans); color: var(--ink-2);
  transition: color var(--tr), background var(--tr);
}
.nav-links a:hover { color: var(--ink); background: var(--wash); }
.nav-links a.active { color: var(--red-text); background: var(--red-soft); }

/* "Have you been hacked?" */
.hacked { position: relative; flex: none; }
.hacked-btn {
  display: inline-flex; align-items: center; gap: 9px;
  min-height: 44px; padding: 0 18px; border-radius: 8px;
  background: var(--red); color: #fff;
  font: 500 14.5px/1 var(--sans);
  transition: background var(--tr), box-shadow var(--tr), transform var(--tr);
  box-shadow: 0 2px 10px rgba(217, 44, 39, .35);
}
.hacked-btn:hover { background: var(--red-hover); box-shadow: 0 4px 16px rgba(217, 44, 39, .45); }
.hacked-btn:active { transform: translateY(1px); }
.hacked-btn .dot {
  width: 8px; height: 8px; border-radius: 50%; background: #fff; flex: none;
  animation: dot-pulse 2.4s ease-out infinite;
}
@keyframes dot-pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 255, 255, .45); }
  70% { box-shadow: 0 0 0 7px rgba(255, 255, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
}
@media (prefers-reduced-motion: reduce) { .hacked-btn .dot { animation: none; } }
.hacked-panel {
  display: none; position: absolute; right: 0; top: calc(100% + 10px); z-index: 50;
  width: min(340px, calc(100vw - 32px)); padding: 8px;
  background: var(--surface); border: 1px solid var(--line-2); border-radius: 12px;
  box-shadow: var(--shadow-l);
}
.hacked-panel a {
  display: block; padding: 11px 12px; border-radius: 8px;
  font: 500 15px/1.4 var(--sans); color: var(--ink);
  transition: background var(--tr), color var(--tr);
}
.hacked-panel a:hover { background: var(--red-soft); color: var(--red-text); }
.hacked-panel .hacked-cap {
  padding: 10px 12px 6px;
  font: 400 11px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-3);
}
.hacked-panel .sub { display: block; padding: 8px 12px 10px; font: 400 13px/1.5 var(--sans); color: var(--ink-3); }
.hacked:hover .hacked-panel,
.hacked:focus-within .hacked-panel,
.hacked.open .hacked-panel { display: block; }
.hacked-short { display: none; }

/* Language switch EN/RU */
.lang-switch {
  flex: none; align-self: center; margin-left: 14px;
  padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px;
  font: 600 12px/1 var(--mono, monospace); letter-spacing: 0.08em;
  color: var(--ink); background: var(--surface);
  transition: border-color var(--tr), color var(--tr), background var(--tr);
  text-decoration: none;
}
.lang-switch:hover { border-color: var(--red, #e5484d); color: var(--red, #e5484d); }
.lang-switch.nav-lang { min-width: 40px; text-align: center; }
.lang-switch.mob-lang { min-height: 52px; padding: 12px 24px; border: 0; border-radius: 0; border-top: 1px solid var(--line); font: 500 16px/1.3 var(--sans); letter-spacing: normal; }
.lang-switch.mob-lang:hover { background: var(--surface-2, #f5f5f5); }

/* Burger + mobile menu */
.burger { display: none; flex: none; margin-left: auto; width: 44px; height: 44px; position: relative; border-radius: 8px; }
.burger span { position: absolute; left: 11px; right: 11px; height: 2px; border-radius: 2px; background: var(--ink); transition: transform var(--tr), top var(--tr); }
.burger span:first-child { top: 17px; }
.burger span:last-child { top: 25px; }
.burger[aria-expanded="true"] span:first-child { top: 21px; transform: rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { top: 21px; transform: rotate(-45deg); }
.mobile-menu { display: none; border-top: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow-m); }
.mobile-menu a {
  display: flex; align-items: center; justify-content: space-between; min-height: 52px;
  padding: 12px 24px; font: 500 16px/1.3 var(--sans); color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.mobile-menu a::after { content: "›"; color: var(--ink-3); font-size: 18px; }
.mobile-menu a.active { color: var(--red-text); }
.mobile-menu.open { display: block; }

/* ============================================================
   Type scale
   ============================================================ */
.h-xl { font: 700 clamp(38px, 5.2vw, 72px)/1.06 var(--sans); letter-spacing: -0.028em; }
.h-lg { font: 700 clamp(28px, 3.4vw, 44px)/1.15 var(--sans); letter-spacing: -0.022em; }
.h-md { font: 700 clamp(20px, 2.2vw, 26px)/1.3 var(--sans); letter-spacing: -0.015em; }
.slogan { font: inherit; }
.slogan-dim { color: var(--ink-3); }
.slogan-red { color: var(--red-text); }
.lead { max-width: 70ch; margin-top: 16px; font: 400 18px/1.65 var(--sans); color: var(--ink-2); }
.sec-head { margin-bottom: 44px; }
.sec-head .lead { margin-top: 14px; }

section { padding: 88px 0; }
.hero { padding: 96px 0 84px; }
.page-hero { padding: 76px 0 64px; }
.page-hero .h-lg { max-width: 24ch; }

/* ============================================================
   Hero visual (photo) — like infoseclab.ru hero__right
   ============================================================ */
.hero-visual {
  display: flex; align-items: center; justify-content: center;
}
.hero-visual img {
  width: 100%; max-width: 540px; height: auto; display: block;
  border-radius: 8px;
}
/* Hero photo has a pure #000 background and blends into the page */

/* ============================================================
   Buttons & links
   ============================================================ */
.btn-primary, .phases { /* semantic wrappers */ }
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-hover); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 26px; border-radius: 8px;
  background: var(--red); color: #fff;
  font: 500 15px/1 var(--sans); letter-spacing: 0.01em;
  transition: background var(--tr), box-shadow var(--tr), transform var(--tr);
  box-shadow: 0 2px 10px rgba(217, 44, 39, .3);
}
.btn:hover { background: var(--red-hover); box-shadow: 0 4px 16px rgba(217, 44, 39, .4); }
.btn:active { transform: translateY(1px); }
.btn-lg { min-height: 54px; padding: 0 32px; font-size: 16px; }
.btn-invert { background: var(--ink); color: var(--bg); box-shadow: none; }
.btn-invert:hover { background: #fff; color: var(--bg); }
.textlink {
  font: 500 15px/1.4 var(--sans); color: var(--red-text);
  text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1.5px; text-decoration-color: var(--red-line);
  transition: color var(--tr), text-decoration-color var(--tr);
}
.textlink:hover { color: #fff; text-decoration-color: #fff; }
.on-dark { /* default theme now */ }

/* ============================================================
   Hero ledger card
   ============================================================ */
.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 56px; align-items: start; }
.hero .lead { margin-top: 24px; font-size: 19px; }
.hero-ctas { display: flex; align-items: center; gap: 26px; margin-top: 36px; flex-wrap: wrap; }

.ledger {
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow-m); overflow: hidden;
}
.ledger-cap {
  display: flex; align-items: center; gap: 10px;
  padding: 16px 22px; border-bottom: 1px solid var(--line);
  background: var(--wash-2);
  font: 500 12px/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-2);
}
.ledger-cap::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--red-bright); flex: none; }
.ledger-row { display: grid; grid-template-columns: 128px 1fr; gap: 16px; padding: 13px 22px; border-bottom: 1px solid var(--line); }
.ledger-row:last-of-type { border-bottom: 0; }
.ledger-row dt { font: 400 12px/1.7 var(--mono); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-3); }
.ledger-row dd { font: 500 15px/1.5 var(--sans); color: var(--ink); }
.ledger-note { padding: 14px 22px 16px; font: 400 13px/1.6 var(--sans); color: var(--ink-3); background: var(--wash-2); }

/* ============================================================
   Directions (index cards)
   ============================================================ */
.dirs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.dir {
  display: flex; flex-direction: column; gap: 14px;
  padding: 30px 28px 28px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  transition: transform var(--tr), box-shadow var(--tr), border-color var(--tr);
}
.dir:hover { transform: translateY(-4px); box-shadow: var(--shadow-l); border-color: var(--line-2); }
.dir-icon {
  width: 48px; height: 48px; border-radius: 10px; flex: none;
  display: grid; place-items: center;
  background: var(--red-soft); color: var(--red-text);
  transition: background var(--tr), color var(--tr);
}
.dir:hover .dir-icon { background: var(--red); color: #fff; }
.dir-icon svg { width: 24px; height: 24px; }
.dir h3 { font: 700 22px/1.2 var(--sans); letter-spacing: -0.015em; }
.dir-tag { font: 400 12px/1.5 var(--mono); text-transform: uppercase; letter-spacing: 0.05em; color: var(--red-text); }
.dir p { font: 400 15.5px/1.6 var(--sans); color: var(--ink-2); }
.dir-more { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); display: grid; gap: 8px; }
.dir-more li { padding-left: 18px; position: relative; font: 400 14.5px/1.5 var(--sans); color: var(--ink-2); }
.dir-more li::before { content: "→"; position: absolute; left: 0; color: var(--red-text); font-weight: 500; }
.dir-meta {
  margin-top: 6px; align-self: flex-start;
  padding: 5px 12px; border-radius: 99px;
  background: var(--wash); font: 400 12.5px/1.4 var(--mono); color: var(--ink-2);
}
.chain-note { margin-top: 28px; font: 400 14.5px/1.6 var(--sans); color: var(--ink-3); max-width: 74ch; }
.chain-note .textlink { font-size: 14.5px; }

/* ============================================================
   Stats strip (deepest black)
   ============================================================ */
.stats { background: var(--deep); color: var(--deep-ink); border-top: 1px solid var(--deep-line); border-bottom: 1px solid var(--deep-line); padding: 0; }
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 40px 32px; border-left: 1px solid var(--deep-line); }
.stat:first-child { border-left: 0; }
.stat .num { font: 700 clamp(32px, 3vw, 44px)/1 var(--sans); letter-spacing: -0.02em; }
.stat .num .unit { font: 400 20px var(--mono); color: var(--red-bright); }
.stat .lbl { margin-top: 10px; font: 400 14px/1.55 var(--sans); color: var(--deep-muted); }

/* ============================================================
   Chain (kill chain steps)
   ============================================================ */
.chain-section { background: #0d0d0d; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.chain { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.chain-step {
  padding: 26px 24px; background: var(--bg); border: 1px solid var(--line); border-radius: 12px;
  transition: transform var(--tr), box-shadow var(--tr);
}
.chain-step:hover { transform: translateY(-3px); box-shadow: var(--shadow-m); }
.chain-step .no { font: 400 13px/1 var(--mono); color: var(--red-text); }
.chain-step h3 { margin-top: 14px; font: 700 18px/1.3 var(--sans); }
.chain-step p { margin-top: 8px; font: 400 14.5px/1.6 var(--sans); color: var(--ink-2); }

/* ============================================================
   Square list
   ============================================================ */
.sq-list { border-top: 2px solid var(--red); }
.sq-list li { padding: 15px 0; border-bottom: 1px solid var(--line); }
.sq-list li span { display: block; font: 400 16px/1.6 var(--sans); color: var(--ink-2); }
.sq-list li b { color: var(--ink); font-weight: 700; }
.frame-list li { font-size: 15px; }

/* ============================================================
   Tables / framed panels
   ============================================================ */
.tbl-frame { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow-s); overflow: hidden; }
.tbl-cap {
  padding: 14px 20px; border-bottom: 1px solid var(--line); background: var(--wash-2);
  font: 500 12px/1.4 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2);
}
.tbl th {
  text-align: left; padding: 13px 20px;
  font: 500 11.5px/1.4 var(--mono); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-3); border-bottom: 1px solid var(--line-2);
}
.tbl td { padding: 14px 20px; border-bottom: 1px solid var(--line); font: 400 15px/1.55 var(--sans); color: var(--ink-2); vertical-align: top; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl td.mono { font: 400 13px var(--mono); color: var(--red-text); white-space: nowrap; }
.tbl-more { padding: 14px 20px; border-top: 1px solid var(--line); background: var(--wash-2); }
.tid {
  display: inline-block; margin: 2px 6px 2px 0; padding: 3px 8px;
  border: 1px solid var(--line-2); border-radius: 6px;
  font: 400 12.5px/1.5 var(--mono); color: var(--ink-2); background: var(--wash);
}

/* ============================================================
   Split layout
   ============================================================ */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: start; }
.split .h-lg { margin-bottom: 26px; }

/* ============================================================
   Diagram art (3D banner per direction) + scroll-in reveal
   ============================================================ */
.dir-art {
  margin-top: 40px; border: 1px solid var(--line); border-radius: 12px;
  background: #000; overflow: hidden; box-shadow: var(--shadow-s);
}
.dir-art img { width: 100%; height: auto; display: block; }

/* Reveal is only hidden when JS is available (html.js set inline in <head>) */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity 700ms ease, transform 700ms cubic-bezier(.22, .61, .36, 1); }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ============================================================
   Row lists (idx rows)
   ============================================================ */
.idx-list { border-top: 1px solid var(--line-2); }
.idx-row {
  display: grid; grid-template-columns: 110px minmax(0, 1fr) auto; gap: 24px; align-items: start;
  padding: 26px 12px; border-bottom: 1px solid var(--line);
  transition: background var(--tr);
}
.idx-row:hover { background: var(--surface); }
.idx-code { font: 400 13px/1.9 var(--mono); color: var(--red-text); letter-spacing: 0.04em; }
.idx-body h3 { font: 700 19px/1.3 var(--sans); letter-spacing: -0.01em; }
.idx-body p { margin-top: 7px; max-width: 66ch; font: 400 15px/1.6 var(--sans); color: var(--ink-2); }
.idx-meta {
  padding: 5px 12px; border-radius: 99px; margin-top: 2px;
  background: var(--wash); font: 400 12.5px/1.4 var(--mono); color: var(--ink-2); white-space: nowrap;
}

/* ============================================================
   Modes
   ============================================================ */
.modes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mode {
  padding: 26px 24px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  transition: transform var(--tr), box-shadow var(--tr);
}
.mode:hover { transform: translateY(-3px); box-shadow: var(--shadow-m); }
.mode .no {
  display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 8px;
  background: var(--red-soft); color: var(--red-text); font: 500 14px/1 var(--mono);
}
.mode h3 { margin-top: 16px; font: 700 18px/1.3 var(--sans); }
.mode p { margin-top: 8px; font: 400 14.5px/1.6 var(--sans); color: var(--ink-2); }

/* ============================================================
   Phase ledger
   ============================================================ */
.phase-list { border-top: 2px solid var(--red); }
.phase { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.phase .no { font: 400 15px/1.8 var(--mono); color: var(--red-text); }
.phase h3 { font: 700 19px/1.35 var(--sans); }
.phase p { margin-top: 6px; max-width: 68ch; font: 400 15.5px/1.6 var(--sans); color: var(--ink-2); }
.phase-list.compact .phase { padding: 16px 0; }
.phase-list.compact h3 { font-size: 17px; }
.phase-list.compact p { font-size: 14.5px; }

/* ============================================================
   Case documents (detail pages) + case card grid (cases.html)
   ============================================================ */
.case {
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  padding: 32px 36px 28px; margin-top: 24px; box-shadow: var(--shadow-s);
  transition: box-shadow var(--tr);
}
.case:hover { box-shadow: var(--shadow-m); }
.case:first-of-type { margin-top: 0; }

/* Card grid on cases.html: three squares per row, cover + title, hover lift */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  display: flex; flex-direction: column; overflow: hidden;
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  transition: transform var(--tr), box-shadow var(--tr), border-color var(--tr);
}
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-l); border-color: var(--line-2); }
.case-cover { position: relative; aspect-ratio: 1 / 1; overflow: hidden; background: #000; }
.case-cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 600ms cubic-bezier(.22, .61, .36, 1); }
.case-card:hover .case-cover img { transform: scale(1.05); }
.case-cover::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(0, 0, 0, .55));
  pointer-events: none;
}
.case-cover .cid { position: absolute; left: 14px; top: 14px; z-index: 1; }
.case-cover .sector { position: absolute; right: 14px; top: 14px; z-index: 1; padding: 6px 12px; border-radius: 99px; background: rgba(0, 0, 0, .6); font: 400 12px/1.4 var(--mono); color: var(--ink-2); }
.case-body { display: flex; flex-direction: column; gap: 12px; flex: 1; padding: 20px 22px 22px; }
.case-body h2 { font: 700 19px/1.35 var(--sans); letter-spacing: -0.012em; }
.case-body p { font: 400 14.5px/1.6 var(--sans); color: var(--ink-2); }
.case-body .case-open { margin-top: auto; padding-top: 4px; font: 500 14px/1.4 var(--sans); color: var(--red-text); }
.case-card:hover .case-open { color: #fff; }
.case-card:hover .case-open::after { content: " →"; }

/* Case detail hero (square art cropped to a wide banner) */
.case-hero { position: relative; margin-top: 40px; border: 1px solid var(--line); border-radius: 12px; background: #000; overflow: hidden; }
.case-hero img { width: 100%; aspect-ratio: 21 / 7; object-fit: cover; display: block; }
.case-meta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.case-meta .sector { padding: 6px 12px; border-radius: 99px; background: var(--wash); font: 400 12.5px/1.4 var(--mono); color: var(--ink-2); }
.cid {
  display: inline-block; font: 400 12px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--red-text); background: var(--red-soft); border: 1px solid var(--red-line); border-radius: 99px;
  padding: 6px 12px;
}
.case h2 { margin-top: 18px; font: 700 clamp(21px, 2.2vw, 27px)/1.3 var(--sans); letter-spacing: -0.015em; }
.case dl { margin-top: 18px; border-top: 1px solid var(--line); }
.case dt { padding-top: 14px; font: 400 11.5px/1.6 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }
.case dd { font: 400 15.5px/1.65 var(--sans); color: var(--ink-2); }
.case .res {
  margin-top: 18px; padding: 14px 18px; border-radius: 10px;
  background: var(--wash); border-left: 3px solid var(--red);
  font: 400 15.5px/1.6 var(--sans); color: var(--ink);
}
.case .res b { color: var(--red-text); }

/* ============================================================
   Contact
   ============================================================ */
.contact-start { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: start; }
.chan-list { border-top: 2px solid var(--red); }
.chan { padding: 18px 0; border-bottom: 1px solid var(--line); }
.chan dt { font: 400 11.5px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }
.chan dd { margin-top: 8px; }
.chan dd > a {
  font: 700 18px/1.4 var(--sans); color: var(--ink);
  text-decoration: underline; text-underline-offset: 4px; text-decoration-color: var(--red-line);
  transition: color var(--tr), text-decoration-color var(--tr);
}
.chan dd > a:hover { color: var(--red-text); text-decoration-color: var(--red-text); }
.chan .sub { display: block; margin-top: 6px; font: 400 14px/1.55 var(--sans); color: var(--ink-3); }
.chan b { font-weight: 700; color: var(--ink); }

/* FAQ */
.faq h2 { margin-bottom: 4px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 18px;
  min-height: 48px; padding: 14px 0; cursor: pointer;
  font: 500 16.5px/1.45 var(--sans); color: var(--ink);
  transition: color var(--tr);
}
.faq summary:hover { color: var(--red-text); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; flex: none; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--wash); font: 400 17px/1 var(--mono); color: var(--ink-2);
  transition: transform var(--tr), background var(--tr), color var(--tr);
}
.faq details[open] summary::after { content: "−"; transform: rotate(180deg); background: var(--red); color: #fff; }
.faq details p { padding: 0 40px 18px 0; max-width: 64ch; color: var(--ink-2); }

/* ============================================================
   CTA band + footer (deepest black)
   ============================================================ */
.band, .cta-band { background: var(--deep); }
.cta-band {
  color: var(--deep-ink);
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: center;
  padding: 48px 48px; border-radius: 16px;
  background:
    radial-gradient(1200px 400px at 85% -20%, rgba(217, 44, 39, .25), transparent 60%),
    #0d0d0d;
  border: 1px solid var(--deep-line);
  box-shadow: var(--shadow-l);
}
.cta-band .h-md { color: var(--deep-ink); }
.cta-band p { margin-top: 10px; max-width: 58ch; color: var(--deep-muted); }
.cta-band .btn-invert { background: #fff; color: var(--bg); }
.cta-band .btn-invert:hover { background: var(--red-bright); color: #fff; }

footer { background: var(--deep); color: var(--deep-ink); padding: 64px 0 0; border-top: 1px solid var(--deep-line); }
.foot-grid { display: grid; grid-template-columns: minmax(0, 2fr) 1fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }
.foot-brand p { margin-top: 16px; max-width: 40ch; font: 400 14.5px/1.65 var(--sans); color: var(--deep-muted); }
.foot-brand .brand-name { color: var(--deep-ink); }
footer h5 { font: 500 11.5px/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--deep-muted); margin-bottom: 16px; }
footer .foot-grid a { display: block; padding: 6px 0; font: 400 15px/1.5 var(--sans); color: var(--ink-2); transition: color var(--tr); }
footer .foot-grid a:hover { color: #fff; }
.foot-bottom {
  border-top: 1px solid var(--deep-line);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 20px 0 24px;
  font: 400 12.5px/1.5 var(--sans); color: var(--deep-muted);
}

/* ============================================================
   404
   ============================================================ */
.notfound { padding: 110px 0 120px; }
.notfound .code { font: 400 13px/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--red-text); }
.notfound .h-lg { margin-top: 18px; }

/* ============================================================
   Services page
   ============================================================ */
.svc-list .case { margin-top: 22px; }
.svc-list .case dl { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 0 24px; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1080px) {
  .hero-grid, .split, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .case-grid { grid-template-columns: 1fr 1fr; }
  .hero-visual { order: -1; }
  .hero-visual img { max-width: 420px; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .stat { padding: 32px 24px; }
  .stat:nth-child(-n+2) { border-top: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--deep-line); }
  .stat:nth-child(odd) { border-left: 0; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .dirs, .chain, .modes { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 880px) {
  .nav-links { display: none; }
  .burger { display: block; }
  .hacked { margin-left: auto; margin-right: 12px; }
  .hacked-full { display: none; }
  .hacked-short { display: inline; }
  .topline .wrap > span:first-child { display: none; }
  section { padding: 64px 0; }
  .hero { padding: 64px 0 56px; }
  .page-hero { padding: 56px 0 48px; }
  .idx-row { grid-template-columns: 1fr; gap: 8px; padding: 22px 4px; }
  .idx-code { line-height: 1.4; }
  .idx-meta { justify-self: start; margin-top: 4px; }
  .phase { grid-template-columns: 56px 1fr; gap: 14px; }
  .cta-band { grid-template-columns: 1fr; gap: 24px; padding: 36px 28px; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 20px; }
  body { font-size: 16px; }
  .mainbar .nav { gap: 12px; }
  .logo-img { width: 32px; height: 32px; }
  .brand-name { font-size: 18px; }
  .hacked { margin-right: 6px; }
  .hacked-btn { padding: 0 14px; }
  .topline .wrap { gap: 10px; }
  .topline-right { gap: 14px; }
  .dirs, .chain, .modes { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .case { padding: 24px 20px 22px; }
  .hero-visual img { max-width: 340px; }
  .stats-row { grid-template-columns: 1fr; }
  .stat { border-left: 0; padding: 24px 0; }
  .stat + .stat { border-top: 1px solid var(--deep-line); }
  .foot-grid { grid-template-columns: 1fr; gap: 32px; }
  .ledger-row { grid-template-columns: 104px 1fr; padding-left: 18px; padding-right: 18px; }
  .ledger-cap, .ledger-note { padding-left: 18px; padding-right: 18px; }
  .case { padding: 24px 20px 22px; }
  .svc-list .case dl { grid-template-columns: 1fr; }
  .tbl td, .tbl th { padding-left: 14px; padding-right: 14px; }
  .tid { white-space: normal; }
  .mobile-menu a { padding: 12px 20px; }
  .chain-note { margin-top: 22px; }
  .cta-band { padding: 32px 22px; }
}

@media (max-width: 380px) {
  .wrap { padding: 0 16px; }
  .mainbar .nav { gap: 8px; }
  .brand { gap: 8px; }
  .logo-img { width: 28px; height: 28px; }
  .brand-name { font-size: 13px; letter-spacing: 0; }
  .hacked { margin-right: 4px; }
  .hacked-btn { min-height: 42px; padding: 0 12px; font-size: 13.5px; gap: 7px; }
  .hacked-btn .dot { width: 7px; height: 7px; }
  .mobile-menu a { padding: 12px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .case-cover img { transform: none !important; transition: none !important; }
}