/* ==========================================================================
   Drain Clear — stylesheet
   1  tokens & fonts          6  header
   2  reset & base            7  hero
   3  type                    8  sections & grids
   4  utilities               9  cards
   5  buttons                10  tables / figures / notices / 3D / footer
   ========================================================================== */

/* ------------------------------------------------------------ 1. tokens */
@font-face {
  font-family: 'Bitter';
  src: url('../fonts/bitter.woff2') format('woff2');
  font-weight: 400 800;
  font-display: swap;
}
@font-face {
  font-family: 'Source Sans 3';
  src: url('../fonts/source-sans-3.woff2') format('woff2');
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/jetbrains-mono.woff2') format('woff2');
  font-weight: 400 700;
  font-display: swap;
}

:root {
  --concrete-950: #101315;
  --concrete-900: #161a1c;
  --concrete-800: #2a2e30;
  --concrete-750: #33383a;
  --concrete-700: #3a3e40;
  --concrete-600: #4a4e50;
  --concrete-500: #5e6264;
  --concrete-400: #7a7e80;
  --concrete-300: #9a9ea0;

  --moss-900: #1e3a2e;
  --moss-700: #2e5a42;
  --moss-500: #5a8a5a;
  --moss-400: #7aaa7a;
  --moss-300: #a8c8a8;
  --moss-200: #d0e4d0;

  --brass-900: #5c4818;
  --brass-700: #8a6e28;
  --brass-500: #b8935a;
  --brass-300: #d0ac70;
  --brass-100: #f0dcb8;

  --ink: #f0ede8;
  --ink-2: #c4c0b8;
  --ink-3: #8a867e;
  --line: #4a4e50;
  --line-2: #5e6264;

  --water: #4a8aaa;
  --warn: #d47a28;
  --danger: #c44a3a;
  --amber: #d4a040;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 44px rgba(0, 0, 0, 0.6);

  --r-xs: 2px;
  --r-sm: 8px;
  --r-lg: 14px;
  --r-pill: 999px;

  --t-fast: 0.14s ease;
  --t-med: 0.28s ease;

  --wrap: 1100px;
  --wrap-narrow: 820px;
  --wrap-wide: 1280px;
  --gutter: 22px;
  --head: 88px;

  --font-head: 'Bitter', 'Rockwell', Georgia, serif;
  --font-body: 'Source Sans 3', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, Menlo, monospace;
}

/* ------------------------------------------------------ 2. reset & base */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}
body {
  margin: 0;
  background: var(--concrete-800);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(240, 237, 232, 0.055) 1px, transparent 0);
  background-size: 6px 6px;
  opacity: 0.9;
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(60% 40% at 12% 0%, rgba(90, 138, 90, 0.06), transparent 70%),
    radial-gradient(50% 40% at 92% 12%, rgba(184, 147, 90, 0.045), transparent 70%);
}
img,
svg {
  max-width: 100%;
}
img {
  height: auto;
}
a {
  color: var(--moss-400);
  text-decoration: none;
  transition: color var(--t-fast);
}
a:hover {
  color: var(--brass-300);
}
:focus-visible {
  outline: 2px solid var(--moss-500);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}
::selection {
  background: var(--moss-700);
  color: var(--ink);
}

/* ------------------------------------------------------------- 3. type */
h1,
h2,
h3,
h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.005em;
  color: var(--ink);
  margin: 0 0 0.5em;
}
h1 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
}
h2 {
  font-size: clamp(1.45rem, 2.6vw, 2rem);
}
h3 {
  font-size: clamp(1.18rem, 2vw, 1.4rem);
}
h4 {
  font-size: 1.08rem;
}
p {
  margin: 0 0 1em;
}
strong {
  color: var(--ink);
  font-weight: 700;
}
code,
.mono {
  font-family: var(--font-mono);
  font-size: 0.86em;
  color: var(--moss-300);
  background: var(--concrete-900);
  border: 1px solid var(--line);
  border-radius: var(--r-xs);
  padding: 1px 5px;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--moss-500);
}
.eyebrow::before {
  content: '▦';
  font-size: 0.9em;
  line-height: 1;
}
.eyebrow-brass {
  color: var(--brass-100);
}
.eyebrow-brass::before {
  color: var(--brass-300);
}
.section-head .eyebrow {
  justify-content: flex-start;
}
.section-lead {
  max-width: 62ch;
  color: var(--ink-2);
  font-size: 1.02rem;
}

/* -------------------------------------------------------- 4. utilities */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 1;
}
.wrap-narrow {
  max-width: var(--wrap-narrow);
}
.wrap-wide {
  max-width: var(--wrap-wide);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 400;
  background: var(--moss-500);
  color: var(--concrete-900);
  padding: 10px 16px;
  border-radius: var(--r-pill);
  font-weight: 700;
  transition: top var(--t-fast);
}
.skip-link:focus {
  top: 10px;
  color: var(--concrete-900);
}
.h-block {
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-weight: 500;
  margin: 44px 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.h-block:first-child {
  margin-top: 0;
}
.text-link {
  font-weight: 700;
  color: var(--moss-400);
}

/* ----------------------------------------------------------- 5. buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform var(--t-fast), background var(--t-fast), color var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
  white-space: nowrap;
  /* a long label inside a narrow column must never widen the page */
  max-width: 100%;
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: var(--moss-500);
  color: #12181a;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--moss-400);
  color: #10161a;
}
.btn-ink {
  background: var(--concrete-900);
  color: var(--ink);
  border-color: var(--line);
}
.btn-ink:hover {
  background: var(--concrete-950);
  color: var(--ink);
}
.btn-outline {
  background: transparent;
  border-color: var(--moss-500);
  color: var(--moss-300);
}
.btn-outline:hover {
  background: rgba(90, 138, 90, 0.12);
  color: var(--ink);
  border-color: var(--moss-400);
}
.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink-2);
}
.btn-ghost:hover {
  background: var(--concrete-700);
  color: var(--ink);
  border-color: var(--line-2);
}
.btn-danger {
  background: var(--warn);
  color: #fff;
}
.btn-sm {
  padding: 7px 14px;
  font-size: 0.78rem;
}
.btn-lg {
  padding: 14px 26px;
  font-size: 0.95rem;
}
.btn-block {
  width: 100%;
}
.btn-lift svg {
  transition: transform var(--t-fast);
}
.btn-lift:hover svg {
  transform: translateY(-1px);
}

/* ------------------------------------------------------------ 6. header */
.site-head {
  position: relative;
  z-index: 200;
}
.brandbar {
  position: sticky;
  top: 0;
  z-index: 200;
  height: 36px;
  background: var(--concrete-900);
  border-bottom: 1px solid var(--brass-900);
  transition: transform var(--t-med);
}
.brandbar-in {
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
}
.brand:hover {
  color: var(--ink);
}
.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--moss-700);
  color: var(--moss-200);
  display: grid;
  place-items: center;
  border: 1px solid var(--moss-500);
  flex: none;
}
.brand-mark svg {
  width: 13px;
  height: 13px;
}
.brand-text {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.brand-text strong {
  font-family: var(--font-head);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.brand-text em {
  font-style: normal;
  font-size: 0.52rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--moss-500);
  font-weight: 700;
}
.brandbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.icon-btn {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--ink-2);
  background: transparent;
}
.icon-btn:hover {
  color: var(--ink);
  border-color: var(--moss-500);
  background: var(--concrete-800);
}
.pill-3d {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 26px;
  padding: 0 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--moss-500);
  color: var(--moss-300);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.pill-3d:hover {
  background: var(--moss-700);
  color: var(--ink);
  border-color: var(--moss-400);
}
.burger {
  display: none;
  width: 32px;
  height: 30px;
  place-items: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--r-xs);
  color: var(--ink-2);
  cursor: pointer;
}
.burger:hover {
  color: var(--ink);
  border-color: var(--moss-500);
}

.grille {
  position: sticky;
  top: 36px;
  z-index: 190;
  background: var(--concrete-800);
  border-bottom: 1px solid var(--brass-900);
  transition: top var(--t-med);
}
.grille::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--line) 0 2px, transparent 2px 12px);
  opacity: 0.9;
}
.grille-in {
  display: flex;
  align-items: stretch;
  gap: 5px;
  height: 48px;
  padding-top: 4px;
}
.gnav-item {
  position: relative;
  display: flex;
  align-items: stretch;
}
.gnav {
  position: relative;
  display: flex;
  align-items: center;
  padding: 12px 20px;
  background: var(--concrete-700);
  border: 1px solid var(--brass-900);
  border-radius: var(--r-xs);
  color: var(--ink-2);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background var(--t-fast), color var(--t-fast), transform var(--t-med), box-shadow var(--t-fast), border-color var(--t-fast);
}
.gnav::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: repeating-linear-gradient(90deg, rgba(240, 237, 232, 0.07) 0 1px, transparent 1px 7px);
  opacity: 0.7;
}
.gnav:hover,
.gnav:focus-visible {
  background: var(--concrete-600);
  color: var(--ink);
  border-color: var(--moss-500);
}
.gnav.is-active {
  background: var(--moss-500);
  color: var(--concrete-950);
  border-color: var(--moss-400);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.gnav.is-active::after {
  background: repeating-linear-gradient(90deg, rgba(16, 19, 21, 0.16) 0 1px, transparent 1px 7px);
}
.gnav-toggle {
  width: 26px;
  background: var(--concrete-700);
  border: 1px solid var(--brass-900);
  border-left: 0;
  border-radius: 0 var(--r-xs) var(--r-xs) 0;
  color: var(--ink-2);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background var(--t-fast), color var(--t-fast);
}
.gnav-toggle:hover {
  background: var(--concrete-600);
  color: var(--ink);
}
.gnav-item.is-active .gnav-toggle {
  background: var(--moss-500);
  color: var(--concrete-950);
  transform: translateY(-3px);
  border-color: var(--moss-400);
}
.gnav-item .gnav {
  border-radius: var(--r-xs) 0 0 var(--r-xs);
}
.diag-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  width: 330px;
  background: var(--concrete-700);
  border: 1px solid var(--line);
  border-top: 2px solid var(--moss-500);
  border-radius: var(--r-sm);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  z-index: 210;
}
.diag-menu[hidden] {
  display: none;
}
.diag-link {
  display: block;
  padding: 10px 12px;
  border-radius: 5px;
  color: var(--ink);
}
.diag-link:hover {
  background: var(--concrete-600);
  color: var(--ink);
}
.diag-link-name {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
}
.diag-link-sub {
  display: block;
  font-size: 0.8rem;
  color: var(--ink-3);
  line-height: 1.4;
}
.diag-link:hover .diag-link-sub {
  color: var(--ink-2);
}

/* scrolled state */
.is-scrolled .brandbar {
  transform: translateY(-100%);
}
.is-scrolled .grille {
  top: 0;
}

/* drawer */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(10, 13, 15, 0.72);
  backdrop-filter: blur(2px);
}
.drawer[hidden] {
  display: none;
}
.drawer-in {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 88vw);
  background: var(--concrete-900);
  border-left: 1px solid var(--brass-900);
  padding: 26px 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 7px;
  box-shadow: var(--shadow-lg);
}
.drawer .gnav {
  justify-content: flex-start;
  padding: 14px 16px;
  border-radius: var(--r-xs);
}
.drawer-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.drawer-sub {
  display: block;
  padding: 9px 16px 9px 26px;
  font-size: 0.82rem;
  color: var(--ink-3);
  border-left: 2px solid var(--line);
  margin-left: 12px;
}
.drawer-sub em {
  display: block;
  font-style: normal;
  font-size: 0.76rem;
  color: var(--concrete-400);
  line-height: 1.4;
}
.drawer-sub:hover {
  color: var(--ink);
  border-left-color: var(--moss-500);
}

/* -------------------------------------------------------------- 7. hero */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #22282b 0%, var(--concrete-800) 70%);
  border-bottom: 1px solid var(--line);
  min-height: 440px;
  display: flex;
  align-items: center;
  padding: 40px 0 44px;
}
.hero-grain {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(240, 237, 232, 0.05) 1px, transparent 0);
  background-size: 5px 5px;
  opacity: 0.85;
  pointer-events: none;
}
.hero-in {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 40px;
  align-items: center;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--moss-500);
  background: rgba(46, 90, 66, 0.35);
  color: var(--moss-200);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.hero h1 {
  font-size: clamp(1.95rem, 4.2vw, 2.9rem);
  margin-bottom: 16px;
}
.hero h1 .accent {
  color: var(--moss-400);
}
.hero-sub {
  max-width: 52ch;
  color: var(--ink-2);
  font-size: 1.03rem;
  margin-bottom: 24px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.hero-meta svg {
  color: var(--moss-500);
}
.hero-visual {
  position: relative;
}
.hero-visual img {
  display: block;
  width: 100%;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
}
.hero-tag {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: var(--r-pill);
  background: rgba(22, 26, 28, 0.88);
  border: 1px solid var(--line);
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hero-tag-a {
  top: 14px;
  left: 14px;
  border-color: var(--moss-500);
  color: var(--moss-200);
}
.hero-tag-b {
  bottom: 14px;
  right: 14px;
  color: var(--brass-100);
  border-color: var(--brass-700);
}

/* page hero */
.page-hero {
  background: var(--concrete-800);
  border-bottom: 3px solid var(--moss-500);
  padding: 34px 0 40px;
  position: relative;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(240, 237, 232, 0.05) 1px, transparent 0);
  background-size: 5px 5px;
  opacity: 0.8;
  pointer-events: none;
}
.page-hero h1 {
  margin-bottom: 12px;
  max-width: 22ch;
}
.page-lead {
  max-width: 68ch;
  color: var(--ink-2);
  font-size: 1.04rem;
  margin: 0;
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.breadcrumbs a {
  color: var(--ink-3);
}
.breadcrumbs a:hover {
  color: var(--moss-300);
}
.breadcrumbs [aria-current] {
  color: var(--moss-300);
}
.crumb-sep {
  color: var(--concrete-500);
}

/* -------------------------------------------------- 8. sections & grids */
.section {
  padding: 56px 0;
}
.section-sm {
  padding: 36px 0;
}
.section-tight {
  padding: 40px 0 56px;
}
.section-head {
  max-width: 70ch;
  margin-bottom: 28px;
}
.section-head h2 {
  margin-bottom: 10px;
}
.section-head-tight {
  margin-bottom: 18px;
}
.section-more {
  margin-top: 26px;
  display: flex;
  justify-content: center;
}
.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: var(--gutter);
}
.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));
}
.grid-auto {
  display: grid;
  gap: var(--gutter);
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* trust bar */
.trust-bar {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gutter);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.trust-bar li {
  padding: 22px 4px 22px 0;
  border-right: 1px solid var(--line);
}
.trust-bar li:last-child {
  border-right: 0;
}
.trust-ico {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--moss-700);
  background: rgba(46, 90, 66, 0.4);
  color: var(--moss-300);
  margin-bottom: 12px;
}
.trust-bar strong {
  display: block;
  font-family: var(--font-head);
  font-size: 1rem;
  margin-bottom: 4px;
}
.trust-bar p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--ink-3);
  line-height: 1.55;
}

/* ------------------------------------------------------------- 9. cards */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--concrete-700);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  box-shadow: var(--shadow-sm);
  color: var(--ink);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-fast), background var(--t-fast);
  min-height: 44px;
}
.card:hover,
.card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--moss-500);
  color: var(--ink);
  background: #3f4446;
}
.card:active {
  transform: translateY(-1px);
}
.card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--brass-700) 0 3px, transparent 3px 9px);
  opacity: 0.75;
  z-index: 2;
}
.card-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--concrete-900);
  border-bottom: 1px solid var(--line);
}
.card-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.card:hover .card-media img {
  transform: scale(1.04);
}
.card-body {
  padding: 18px;
  flex: 1;
}
.card-title {
  font-size: 1.06rem;
  margin: 0 0 6px;
  line-height: 1.3;
}
.card-desc {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-2);
  line-height: 1.6;
}
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.12);
}
.card-tags {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
}
.card-arrow {
  color: var(--moss-400);
  font-size: 1.1rem;
  transition: transform var(--t-fast), color var(--t-fast);
}
.card:hover .card-arrow {
  transform: translateX(4px);
  color: var(--brass-300);
}

/* diag card */
.diag-card {
  padding: 22px;
  gap: 12px;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: flex-start;
  border-left: 3px solid var(--moss-700);
}
.diag-card:hover {
  border-left-color: var(--moss-400);
}
.diag-card .diag-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(46, 90, 66, 0.45);
  border: 1px solid var(--moss-700);
  color: var(--moss-300);
  flex: none;
}
.diag-card .card-body {
  padding: 0;
  flex: 1 1 60%;
}
.diag-card .card-foot {
  padding: 12px 0 0;
  border-top: 1px solid var(--line);
  background: none;
  width: 100%;
}

/* quote card */
.quote-card {
  padding: 24px 22px 0;
  border-left: 3px solid var(--moss-500);
}
.quote-mark {
  color: var(--moss-700);
  display: block;
  margin-bottom: 6px;
}
.quote-text {
  margin: 0;
  flex: 1;
}
.quote-text p {
  font-family: var(--font-head);
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--ink);
  margin: 0;
}
.quote-src {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--brass-300);
  font-style: normal;
}
.quote-card .card-foot {
  margin: 18px -22px 0;
  padding: 12px 22px;
}

/* qa card */
.qa-card {
  padding: 22px 22px 0;
  border-left: 3px solid var(--moss-500);
}
.qa-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.qa-src {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-3);
  letter-spacing: 0.06em;
}
.qa-q {
  margin: 0 0 14px;
}
.qa-q p {
  margin: 0;
  font-style: italic;
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--ink);
}
.qa-a {
  display: flex;
  gap: 9px;
  margin: 0 0 18px;
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.6;
}
.qa-tick {
  flex: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--moss-700);
  color: var(--moss-200);
  display: grid;
  place-items: center;
  margin-top: 3px;
}
.qa-card .card-foot {
  margin: 0 -22px;
  padding: 12px 22px;
}

/* tool card */
.tool-art {
  aspect-ratio: 16 / 10;
  background: var(--concrete-750);
  border-bottom: 1px solid var(--line);
  display: grid;
  place-items: center;
  padding: 12px;
}
.tool-art img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.4s ease;
}
.tool-card:hover .tool-art img {
  transform: scale(1.05);
}

/* blog card */
.blog-card .card-media {
  aspect-ratio: 16 / 9;
}
.blog-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

/* step card (homepage flow) */
.steps-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gutter);
  counter-reset: step;
}
.step-card-in {
  position: relative;
  display: block;
  height: 100%;
  background: var(--concrete-700);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
  color: var(--ink);
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-fast);
}
.step-card-in:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--moss-500);
  color: var(--ink);
}
.step-card-in:active {
  transform: translateY(-1px);
}
.step-art {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--concrete-900);
  border-bottom: 1px solid var(--line);
}
.step-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}
.step-index {
  position: absolute;
  top: 10px;
  left: 10px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--moss-500);
  color: var(--concrete-950);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.86rem;
  border: 2px solid rgba(22, 26, 28, 0.5);
}
.step-body {
  padding: 16px;
}
.step-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--moss-500);
  font-weight: 600;
}
.step-body h3 {
  font-size: 1.02rem;
  margin: 6px 0 6px;
}
.step-body p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--ink-3);
  line-height: 1.55;
}

/* chips */
.chip-scroll {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 4px 0 12px;
  scrollbar-width: thin;
  scroll-snap-type: x proximity;
}
.chip-card {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  min-height: 44px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--concrete-700);
  color: var(--ink);
  scroll-snap-align: start;
  transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.chip-card:hover {
  border-color: var(--moss-500);
  background: var(--concrete-600);
  color: var(--ink);
  transform: translateY(-2px);
}
.chip-title {
  font-size: 0.9rem;
  font-weight: 600;
}
.chip-src {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--brass-300);
}

/* tags & badges */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  background: var(--concrete-600);
  color: var(--ink-2);
  border: 1px solid transparent;
  white-space: nowrap;
}
.tag-moss {
  background: var(--moss-700);
  color: var(--moss-200);
}
.tag-brass {
  background: var(--brass-700);
  color: var(--brass-100);
}
.tag-outline {
  background: transparent;
  border-color: var(--line-2);
  color: var(--ink-2);
}
.tag-warn {
  background: #4a2410;
  color: #f2bc88;
}
.param-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 2px 8px;
  border-radius: var(--r-xs);
  background: var(--concrete-800);
  border: 1px solid var(--moss-700);
  color: var(--moss-200);
  white-space: nowrap;
}
.difficulty-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 3px 9px;
  border-radius: var(--r-pill);
  white-space: nowrap;
}
.difficulty-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.difficulty-badge.easy {
  color: var(--moss-300);
  background: rgba(46, 90, 66, 0.55);
  border: 1px solid var(--moss-700);
}
.difficulty-badge.medium {
  color: #f5d870;
  background: rgba(74, 58, 16, 0.6);
  border: 1px solid #8a6a10;
}
.difficulty-badge.hard,
.difficulty-badge.pro {
  color: #f2a08a;
  background: rgba(74, 30, 20, 0.6);
  border: 1px solid #8a3a28;
}

/* ------------------------------------------------------------ 10. tables */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--concrete-750);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
thead th {
  background: var(--moss-700);
  color: var(--moss-200);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--moss-500);
  white-space: nowrap;
}
tbody th,
tbody td {
  padding: 13px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
tbody tr:last-child th,
tbody tr:last-child td {
  border-bottom: 0;
}
tbody tr {
  transition: background var(--t-fast);
}
tbody tr:hover {
  background: rgba(90, 138, 90, 0.08);
}
tbody th {
  color: var(--ink);
  font-weight: 600;
  font-family: var(--font-body);
}
.triage td:nth-child(3) {
  color: var(--ink-2);
}
.src-link {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--brass-300);
  white-space: nowrap;
}
.compare th[scope='row'] a {
  color: var(--moss-300);
  font-weight: 600;
}

/* faq */
.faq-block {
  margin-top: 40px;
}
.faq-head {
  font-size: 1.1rem;
  margin-bottom: 14px;
}
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--concrete-750);
  margin-bottom: 8px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 14px 18px;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  min-height: 44px;
  align-items: center;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  font-family: var(--font-mono);
  color: var(--moss-400);
  font-size: 1.1rem;
}
.faq-item[open] summary::after {
  content: '−';
}
.faq-item[open] summary {
  border-bottom: 1px solid var(--line);
}
.faq-item p {
  margin: 0;
  padding: 14px 18px 18px;
  font-size: 0.92rem;
  color: var(--ink-2);
}

/* step figures */
.step-figure {
  margin: 0;
}
.step-image {
  position: relative;
  border-radius: var(--r-sm);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--concrete-900);
  box-shadow: var(--shadow-sm);
}
.step-image img {
  display: block;
  width: 100%;
  height: auto;
}
.step-figure figcaption {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 2px 0;
}
.step-figure figcaption p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.5;
  max-width: 46ch;
}
.step-number {
  flex: none;
  display: inline-block;
  padding: 2px 9px;
  border-radius: var(--r-pill);
  background: var(--moss-500);
  color: var(--concrete-950);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-top: 2px;
}
.step-number.is-dont {
  background: var(--danger);
  color: #fff;
}
.hotspot {
  position: absolute;
  width: 44px;
  height: 44px;
  transform: translate(-50%, -50%);
  display: grid;
  place-items: center;
  cursor: help;
  background: none;
  border: 0;
  padding: 0;
}
.hotspot-dot {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 2px solid var(--moss-400);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(90, 138, 90, 0.25);
  position: relative;
}
.hotspot-dot::after {
  content: '';
  position: absolute;
  inset: -7px;
  border-radius: 50%;
  border: 1px solid rgba(122, 170, 122, 0.5);
  animation: pulse 2.4s ease-out infinite;
}
.hotspot-label {
  position: absolute;
  bottom: calc(100% - 2px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--concrete-950);
  border: 1px solid var(--moss-700);
  color: var(--moss-200);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: var(--r-xs);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-fast);
}
.hotspot:hover .hotspot-label,
.hotspot:focus-visible .hotspot-label {
  opacity: 1;
}
@keyframes pulse {
  0% {
    transform: scale(0.7);
    opacity: 0.9;
  }
  100% {
    transform: scale(1.6);
    opacity: 0;
  }
}
.is-dont .step-image {
  border: 2px solid var(--danger);
}
.dont-flag {
  position: absolute;
  top: 10px;
  left: 10px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--danger);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 9px;
  border-radius: var(--r-xs);
}
.loop-flag {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(22, 26, 28, 0.85);
  border: 1px solid var(--moss-700);
  color: var(--moss-200);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  border-radius: var(--r-pill);
}
.step-stack {
  display: grid;
  gap: 26px;
  margin-top: 24px;
}
.dont-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gutter);
  margin-top: 22px;
}

/* notices */
.notice {
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--concrete-700);
  padding: 16px 18px;
  margin: 24px 0;
}
.notice p:last-child {
  margin-bottom: 0;
}
.notice-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 6px;
  font-weight: 700;
}
.notice-safety {
  background: #2e1e10;
  border-color: #7a3a10;
  color: #f2bc88;
}
.notice-safety .notice-title {
  color: #f2bc88;
}
.notice-info {
  background: #152530;
  border-color: #3a5a78;
  color: #a8c4d9;
}
.notice-info .notice-title {
  color: #a8c4d9;
}
.notice-warn {
  background: #2e2410;
  border-color: #8a6a10;
  color: #f5d870;
}
.notice-warn .notice-title {
  color: #f5d870;
}
.notice-neutral {
  background: var(--concrete-700);
}
.notice a {
  color: inherit;
  text-decoration: underline;
}
.tip-box {
  border-left: 4px solid var(--moss-500);
  background: var(--concrete-750);
  padding: 14px 18px;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  margin: 0 0 14px;
}
.tip-box p {
  margin: 0;
}
.tip-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 5px !important;
  font-weight: 700;
  color: var(--moss-300);
}
.tip-warn {
  border-left-color: var(--warn);
}
.tip-warn .tip-title {
  color: #f2bc88;
}
.tip-note {
  border-left-color: var(--water);
}
.tip-note .tip-title {
  color: #a8c4d9;
}
.tip-ok {
  border-left-color: var(--moss-400);
}
.tip-stack {
  display: grid;
  gap: 4px;
  margin-top: 18px;
}
.legal-note {
  background: var(--concrete-750);
  border-left: 4px solid var(--moss-500);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--ink-2);
  border-radius: 0 var(--r-xs) var(--r-xs) 0;
}
.empty-state {
  border: 1px dashed var(--line-2);
  border-radius: var(--r-sm);
  padding: 34px 22px;
  text-align: center;
  color: var(--ink-3);
  background: rgba(0, 0, 0, 0.12);
}
.empty-title {
  font-family: var(--font-head);
  color: var(--ink-2);
  font-size: 1.05rem;
  margin-bottom: 6px;
}
.empty-state p:last-child {
  margin: 0;
}

/* safety strip */
.safety-strip {
  background: #2b1c10;
  border-top: 1px solid #7a3a10;
  border-bottom: 1px solid #7a3a10;
}
.safety-strip .wrap,
.safety-strip > p {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.safety-strip {
  padding: 12px 0;
}
.safety-strip {
  display: flex;
  align-items: center;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.safety-strip-icons {
  display: inline-flex;
  gap: 8px;
  color: #e89a50;
}
.safety-strip p {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}
.safety-strip strong {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: #f2bc88;
}
.safety-strip span {
  font-size: 0.84rem;
  color: #d8a878;
}

/* cta band */
.cta-band {
  margin: 0;
  padding: 0 0 56px;
}
.cta-band-in {
  max-width: var(--wrap);
  margin: 0 auto;
  background: linear-gradient(135deg, var(--moss-700), var(--moss-900));
  border: 1px solid var(--moss-500);
  border-radius: var(--r-lg);
  padding: 34px 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.cta-band-in::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, rgba(240, 237, 232, 0.05) 0 1px, transparent 1px 11px);
  pointer-events: none;
}
.cta-band-in h2 {
  color: var(--ink);
  margin-bottom: 8px;
  position: relative;
}
.cta-band-in p {
  color: var(--moss-200);
  margin: 0;
  max-width: 52ch;
  position: relative;
}
.cta-band-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  position: relative;
}
.cta-band .btn-primary {
  background: var(--ink);
  color: var(--concrete-950);
}
.cta-band .btn-primary:hover {
  background: #fff;
}
.cta-band .btn-ghost {
  border-color: rgba(240, 237, 232, 0.45);
  color: var(--ink);
}
.cta-band .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--ink);
}

/* ----------------------------------------------------------- sim block */
.sim-section {
  background: linear-gradient(180deg, var(--concrete-900), var(--concrete-800));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.sim-block {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 40px;
  align-items: center;
}
.sim-copy h2 {
  margin-bottom: 12px;
}
.sim-copy p {
  color: var(--ink-2);
}
.sim-list {
  list-style: none;
  margin: 18px 0 24px;
  padding: 0;
  display: grid;
  gap: 9px;
}
.sim-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--ink-2);
}
.sim-stage-wrap {
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
  background: var(--concrete-950);
  box-shadow: var(--shadow-lg);
}
.sim-stage {
  position: relative;
  aspect-ratio: 16 / 10;
  min-height: 260px;
}
.sim-stage canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.sim-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.5s ease;
}
.sim-stage.is-live .sim-poster {
  opacity: 0;
  pointer-events: none;
}
.sim-stage-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border-top: 1px solid var(--line);
  background: var(--concrete-900);
}
.webgl-status {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  padding: 3px 8px;
  border-radius: var(--r-xs);
  border: 1px solid var(--line-2);
  color: var(--ink-3);
  background: var(--concrete-800);
}
.webgl-status.ready {
  color: var(--moss-200);
  border-color: var(--moss-700);
  background: rgba(46, 90, 66, 0.5);
}
.webgl-status.fallback {
  color: #f5d870;
  border-color: #8a6a10;
  background: rgba(46, 36, 16, 0.7);
}
.webgl-status.error {
  color: #f2a08a;
  border-color: #8a3a28;
  background: rgba(46, 30, 22, 0.8);
}
.webgl-status.loading {
  color: var(--ink-2);
}
.sim-hint {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-3);
  margin-right: auto;
}
.sim-fps {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--ink-3);
}
.sim-label {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 5;
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--moss-200);
  background: rgba(22, 26, 28, 0.86);
  border: 1px solid var(--moss-700);
  border-radius: var(--r-pill);
  padding: 3px 9px;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}
.sim-label[hidden] {
  display: none;
}
.sim-canvas.is-fallback {
  aspect-ratio: 16 / 10;
}
.sim-canvas.is-fallback .sim-canvas,
.sim-canvas.is-fallback canvas {
  display: none;
}

/* teardown page */
.sim-page {
  padding: 30px 0 56px;
}
.sim-page-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 26px;
  align-items: start;
}
.sim-canvas-wrap {
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
  background: var(--concrete-950);
  box-shadow: var(--shadow-md);
}
.sim-canvas {
  position: relative;
  aspect-ratio: 4 / 3;
  min-height: 340px;
  touch-action: none;
  outline-offset: -3px;
}
.sim-canvas canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.sim-loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 12px;
  background: var(--concrete-950);
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  z-index: 3;
}
.sim-loading[hidden] {
  display: none;
}
.skeleton {
  width: 62%;
  height: 54%;
  border-radius: var(--r-sm);
  background: linear-gradient(100deg, #1d2326 30%, #272d30 50%, #1d2326 70%);
  background-size: 220% 100%;
  animation: shimmer 1.6s linear infinite;
}
@keyframes shimmer {
  to {
    background-position: -220% 0;
  }
}
.load-bar {
  width: 180px;
  height: 3px;
  background: var(--concrete-700);
  border-radius: 2px;
  overflow: hidden;
}
.load-bar span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--moss-500);
  transition: width 0.3s ease;
}
.sim-error {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 8px;
  text-align: center;
  padding: 24px;
  background: rgba(16, 19, 21, 0.94);
  z-index: 4;
}
.sim-error[hidden] {
  display: none;
}
.sim-error-title {
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--ink);
  margin: 0;
}
.sim-error p {
  color: var(--ink-3);
  font-size: 0.86rem;
  max-width: 40ch;
}
.sim-error-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 6px;
}
.sim-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.sim-disclaimer {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-3);
  line-height: 1.6;
  margin: 14px 0 0;
  padding-left: 10px;
  border-left: 2px solid var(--line);
}
.layer-list {
  display: grid;
  gap: 6px;
  margin-bottom: 16px;
}
.layer-btn {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas: 'num name' 'num sub';
  gap: 0 12px;
  align-items: center;
  text-align: left;
  padding: 12px 14px;
  background: var(--concrete-700);
  border: 1px solid var(--line);
  border-left: 3px solid var(--concrete-600);
  border-radius: var(--r-sm);
  color: var(--ink);
  cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.layer-btn:hover {
  background: var(--concrete-600);
  border-left-color: var(--moss-500);
}
.layer-btn[aria-pressed='true'] {
  background: rgba(46, 90, 66, 0.55);
  border-color: var(--moss-500);
  border-left-color: var(--moss-400);
}
.layer-num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--brass-300);
}
.layer-name {
  grid-area: name;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.98rem;
}
.layer-sub {
  grid-area: sub;
  font-size: 0.78rem;
  color: var(--ink-3);
}
.layer-panels {
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--concrete-750);
  padding: 20px;
  min-height: 260px;
}
.layer-panel[hidden] {
  display: none;
}
.layer-panel h2 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}
.layer-role {
  color: var(--ink-2);
  font-size: 0.9rem;
}
.layer-facts {
  margin: 14px 0;
  display: grid;
  gap: 10px;
}
.layer-facts dt {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--moss-400);
}
.layer-facts dd {
  margin: 2px 0 0;
  font-size: 0.88rem;
  color: var(--ink-2);
}
.layer-issues-h {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brass-300);
  margin: 0 0 6px;
}
.layer-issues {
  margin: 0;
  padding-left: 18px;
  font-size: 0.86rem;
  color: var(--ink-2);
}
.layer-issues li {
  margin-bottom: 4px;
}
.fallback-2d {
  margin-top: 40px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--concrete-750);
  padding: 22px;
}
.fallback-2d[hidden] {
  display: none;
}
.fallback-2d img {
  width: 100%;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
}
.fallback-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}
.fallback-notes h3 {
  font-size: 0.98rem;
  margin-bottom: 4px;
}
.fallback-notes p {
  font-size: 0.86rem;
  color: var(--ink-2);
  margin-bottom: 6px;
}
.fallback-notes .mono {
  display: block;
  font-size: 0.74rem;
  background: none;
  border: 0;
  padding: 0;
  color: var(--ink-3);
}

/* -------------------------------------------------------- calculators */
.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: start;
}
.calc-form {
  background: var(--concrete-750);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.calc-h {
  font-size: 1.2rem;
  margin-bottom: 18px;
}
.field {
  margin-bottom: 16px;
}
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin-bottom: 6px;
}
.field .unit {
  color: var(--ink-3);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--concrete-900);
  border: 1px solid var(--line-2);
  border-radius: var(--r-xs);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.field textarea {
  resize: vertical;
  font-family: var(--font-body);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--moss-500);
  box-shadow: 0 0 0 3px rgba(90, 138, 90, 0.22);
}
.field input:invalid:not(:placeholder-shown) {
  border-color: var(--danger);
}
.hint {
  margin: 5px 0 0;
  font-size: 0.78rem;
  color: var(--ink-3);
}
.form-note {
  margin: 12px 0 0;
  font-size: 0.8rem;
  color: var(--ink-3);
}
.calc-result {
  background: var(--concrete-750);
  border: 1px solid var(--line);
  border-left: 3px solid var(--moss-500);
  border-radius: var(--r-sm);
  padding: 24px;
  min-height: 260px;
}
.calc-placeholder {
  color: var(--ink-3);
  font-size: 0.92rem;
}
.result-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.result-title {
  font-family: var(--font-head);
  font-size: 1.35rem;
  margin: 0;
}
.result-rows {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-xs);
  overflow: hidden;
  margin: 16px 0;
}
.result-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 13px;
  background: var(--concrete-700);
  font-size: 0.88rem;
}
.result-row dt {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.result-row dd {
  margin: 0;
  text-align: right;
  color: var(--ink);
  font-weight: 600;
}
.result-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin: 16px 0;
}
.cal-cell {
  aspect-ratio: 1;
  border-radius: var(--r-xs);
  border: 1px solid var(--line);
  background: var(--concrete-800);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--ink-3);
}
.cal-cell.is-task {
  background: var(--moss-700);
  border-color: var(--moss-500);
  color: var(--moss-200);
}
.cal-legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-3);
}
.cal-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.cal-legend i {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--moss-700);
  border: 1px solid var(--moss-500);
}
.cal-cell.is-soft {
  background: var(--concrete-700);
  border-color: var(--line-2);
  color: var(--ink-3);
}
.cal-h {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 4px 0 0;
}
.result-notes {
  margin: 0 0 16px;
  padding-left: 18px;
  font-size: 0.86rem;
  color: var(--ink-2);
}
.result-notes li {
  margin-bottom: 5px;
}
.result-head .result-title {
  margin: 0;
}
.toc a.is-current {
  color: var(--moss-300);
  font-weight: 600;
}

/* --------------------------------------------------------------- parts */
.parts-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
  padding: 16px;
  background: var(--concrete-750);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  margin-bottom: 14px;
}
.control {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 140px;
  flex: 1 1 140px;
}
.control label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.control select {
  padding: 8px 10px;
  background: var(--concrete-900);
  border: 1px solid var(--line-2);
  border-radius: var(--r-xs);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.88rem;
}
.parts-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-3);
  margin: 0 0 12px;
}
.parts-table tr.part-row.is-hidden,
.parts-table tr.part-detail.is-hidden {
  display: none;
}
.part-toggle {
  background: none;
  border: 0;
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  text-align: left;
  min-height: 32px;
}
.part-toggle:hover {
  color: var(--moss-300);
}
.part-caret {
  font-family: var(--font-mono);
  color: var(--moss-500);
  width: 12px;
}
.part-detail td {
  background: var(--concrete-800);
  padding: 0;
}
.part-detail-in {
  padding: 16px 18px;
}
.part-detail-in p {
  margin: 0 0 8px;
  font-size: 0.88rem;
  color: var(--ink-2);
}
.part-detail-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-3);
  margin-bottom: 12px !important;
}
.part-detail-meta strong {
  color: var(--moss-200);
}
.parts-empty {
  margin: 16px 0;
  padding: 20px;
  border: 1px dashed var(--line-2);
  border-radius: var(--r-sm);
  color: var(--ink-3);
  text-align: center;
}
.parts-empty[hidden] {
  display: none;
}

/* tools page */
.tool-detail-list {
  display: grid;
  gap: 14px;
}
.tool-detail {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  padding: 16px;
  background: var(--concrete-750);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
}
.tool-detail-art {
  background: var(--concrete-800);
  border: 1px solid var(--line);
  border-radius: var(--r-xs);
  overflow: hidden;
}
.tool-detail-art img {
  display: block;
  width: 100%;
  height: auto;
}
.tool-detail-head {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.tool-detail-head h3 {
  margin: 0;
  font-size: 1.1rem;
}
.tool-detail p {
  font-size: 0.9rem;
  color: var(--ink-2);
  margin-bottom: 6px;
}
.tool-note {
  font-family: var(--font-mono);
  font-size: 0.74rem !important;
  color: var(--ink-3) !important;
}

/* ----------------------------------------------------------- diagnose */
.diag-block {
  border-top: 1px solid var(--line);
  padding: 34px 0;
  scroll-margin-top: 110px;
}
.diag-block-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}
.diag-block-head .diag-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(46, 90, 66, 0.45);
  border: 1px solid var(--moss-700);
  color: var(--moss-300);
  flex: none;
}
.diag-block-head h2 {
  margin-bottom: 4px;
}
.diag-short {
  margin: 0;
  color: var(--ink-2);
}
.diag-block-meta {
  margin-left: auto;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.diag-block-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  align-items: start;
}
.diag-block-figure img {
  width: 100%;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.diag-block-copy h3 {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--moss-400);
  margin: 18px 0 8px;
  font-weight: 600;
}
.diag-block-copy h3:first-child {
  margin-top: 0;
}
.diag-block-copy p {
  font-size: 0.92rem;
  color: var(--ink-2);
}
.checklist {
  margin: 0 0 8px;
  padding-left: 20px;
  font-size: 0.9rem;
  color: var(--ink-2);
}
.checklist li {
  margin-bottom: 6px;
}
.cause-list {
  margin: 0 0 18px;
  padding-left: 18px;
  font-size: 0.88rem;
  color: var(--ink-3);
}
.cause-list li {
  margin-bottom: 4px;
}

/* fix page */
.fix-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 30px;
}
.fix-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 34px;
}
.fix-step {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  scroll-margin-top: 110px;
}
.fix-step-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.fix-step-head h2 {
  margin: 0;
  font-size: 1.35rem;
}
.fix-step-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ---------------------------------------------------------------- blog */
.featured-post {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 0;
  background: var(--concrete-700);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
  color: var(--ink);
  margin-bottom: 34px;
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-fast);
}
.featured-post:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--moss-500);
  color: var(--ink);
}
.featured-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 260px;
}
.featured-copy {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.featured-copy h2 {
  font-size: 1.5rem;
  margin-bottom: 10px;
}
.featured-copy p {
  color: var(--ink-2);
  font-size: 0.94rem;
}
.featured-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-3) !important;
  margin-bottom: 18px !important;
}
.featured-copy .btn {
  align-self: flex-start;
}
.blog-controls {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.chip {
  padding: 7px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--t-fast);
  min-height: 34px;
}
.chip:hover {
  border-color: var(--moss-500);
  color: var(--ink);
}
.chip.is-active {
  background: var(--moss-500);
  border-color: var(--moss-500);
  color: var(--concrete-950);
  font-weight: 700;
}
.blog-search input {
  padding: 9px 14px;
  background: var(--concrete-900);
  border: 1px solid var(--line-2);
  border-radius: var(--r-pill);
  color: var(--ink);
  font-size: 0.88rem;
  min-width: 240px;
}
.blog-search input:focus {
  outline: none;
  border-color: var(--moss-500);
}
.blog-cell[hidden] {
  display: none;
}
.pagination {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 30px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-3);
}
.page {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: var(--r-xs);
  border: 1px solid var(--line);
}
.page.is-current {
  background: var(--moss-500);
  color: var(--concrete-950);
  border-color: var(--moss-500);
  font-weight: 700;
}
.page.is-disabled {
  opacity: 0.4;
}
.page-note {
  margin-left: 8px;
}

/* post */
.post {
  padding: 34px 0 56px;
}
.post-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 290px;
  gap: 44px;
  align-items: start;
}
.post-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-3);
  margin-bottom: 20px;
}
.post-hero {
  margin: 0 0 26px;
}
.post-hero img {
  width: 100%;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
}
.lede {
  font-size: 1.06rem;
  color: var(--ink);
  line-height: 1.65;
}
.post-section {
  margin-top: 34px;
  scroll-margin-top: 110px;
}
.post-section h2 {
  font-size: 1.5rem;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.post-section p {
  color: var(--ink-2);
}
.post-aside {
  position: sticky;
  top: 110px;
  display: grid;
  gap: 14px;
}
.toc {
  background: var(--concrete-750);
  border: 1px solid var(--line);
  border-left: 3px solid var(--moss-500);
  border-radius: var(--r-sm);
  padding: 16px 18px;
}
.toc-h {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--moss-400);
  margin: 0 0 10px;
}
.toc ol {
  margin: 0;
  padding-left: 16px;
  font-size: 0.84rem;
  color: var(--ink-3);
}
.toc li {
  margin-bottom: 6px;
}
.toc a {
  color: var(--ink-2);
}
.toc a:hover {
  color: var(--moss-300);
}
.aside-card {
  background: var(--concrete-750);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 18px;
}
.aside-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}
.aside-card p {
  font-size: 0.86rem;
  color: var(--ink-2);
}
.aside-card-flat {
  background: transparent;
  border-style: dashed;
}

/* prose pages */
.prose {
  max-width: var(--wrap-narrow);
}
.prose h2 {
  margin-top: 34px;
  font-size: 1.4rem;
}
.prose p {
  color: var(--ink-2);
  font-size: 1rem;
}
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.stat-row div {
  text-align: left;
}
.stat-row strong {
  display: block;
  font-family: var(--font-head);
  font-size: 1.9rem;
  color: var(--moss-300);
  line-height: 1.1;
}
.stat-row span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 30px;
  align-items: start;
}
.contact-side {
  display: grid;
  gap: 4px;
}

/* search */
.search-wrap {
  max-width: var(--wrap-narrow);
}
.search-form {
  position: relative;
  margin-bottom: 12px;
}
.search-form input {
  width: 100%;
  padding: 16px 52px 16px 18px;
  background: var(--concrete-900);
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  color: var(--ink);
  font-size: 1.05rem;
}
.search-form input:focus {
  outline: none;
  border-color: var(--moss-500);
  box-shadow: 0 0 0 3px rgba(90, 138, 90, 0.2);
}
.search-icon {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-3);
}
.search-hint {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-3);
  margin-bottom: 20px;
}
.search-results {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.search-results li a {
  display: block;
  padding: 14px 16px;
  background: var(--concrete-750);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--ink);
  transition: border-color var(--t-fast), transform var(--t-fast);
}
.search-results li a:hover {
  border-color: var(--moss-500);
  transform: translateX(3px);
  color: var(--ink);
}
.result-name {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
}
.result-desc {
  display: block;
  font-size: 0.86rem;
  color: var(--ink-3);
}
mark {
  background: var(--moss-700);
  color: var(--moss-200);
  padding: 0 2px;
  border-radius: 2px;
}

/* -------------------------------------------------------------- footer */
.site-foot {
  background: var(--concrete-900);
  border-top: 1px solid var(--brass-900);
  padding: 48px 0 22px;
  position: relative;
  z-index: 1;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 30px;
}
.foot-brand p {
  font-size: 0.86rem;
  color: var(--ink-3);
  margin: 14px 0 12px;
  max-width: 40ch;
}
.foot-icons {
  display: flex;
  gap: 12px;
  color: var(--moss-500);
  margin-bottom: 12px;
}
.foot-version {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--concrete-500) !important;
  margin: 0 !important;
}
.foot-h {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--moss-400);
  margin-bottom: 12px;
  font-weight: 600;
}
.foot-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}
.foot-list a {
  color: var(--ink-2);
  font-size: 0.88rem;
}
.foot-list a:hover {
  color: var(--moss-300);
}
.foot-contact {
  font-size: 0.86rem;
  color: var(--ink-3);
}
.foot-mail {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--brass-300);
  margin-bottom: 14px;
  word-break: break-all;
}
.subscribe {
  display: flex;
  gap: 6px;
}
.subscribe input {
  flex: 1;
  min-width: 0;
  padding: 8px 11px;
  background: var(--concrete-950);
  border: 1px solid var(--line-2);
  border-radius: var(--r-xs);
  color: var(--ink);
  font-size: 0.84rem;
}
.subscribe input:focus {
  outline: none;
  border-color: var(--moss-500);
}
.subscribe-note {
  font-size: 0.74rem;
  color: var(--ink-3);
  margin: 8px 0 0;
}
.foot-safety {
  margin-top: 36px;
  padding: 20px 22px;
  border: 1px solid var(--moss-700);
  border-radius: var(--r-sm);
  background: rgba(30, 58, 46, 0.28);
}
.foot-safety-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.foot-safety-icon {
  color: var(--moss-300);
  display: grid;
  place-items: center;
}
.foot-safety h2 {
  font-size: 1rem;
  margin: 0;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--moss-200);
}
.foot-safety-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px 22px;
  font-size: 0.82rem;
  color: var(--ink-2);
}
.foot-safety-list strong {
  color: var(--moss-200);
}
.foot-edu {
  margin: 22px 0 0;
  font-size: 0.78rem;
  color: var(--ink-3);
  line-height: 1.65;
  max-width: 100ch;
}
.foot-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--concrete-700);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-3);
}
.foot-bottom p {
  margin: 0;
}
.foot-bottom-nav {
  display: flex;
  gap: 16px;
}
.foot-bottom-nav a {
  color: var(--ink-3);
}
.foot-bottom-nav a:hover {
  color: var(--moss-300);
}
.badge-gloves {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: var(--r-pill);
  border: 1px solid var(--brass-700);
  color: var(--brass-300);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
}

/* grid children default to min-width:auto, which lets an <img> push a track
   wider than the viewport. Every multi-column container gets min-width:0. */
.grid-2 > *,
.grid-3 > *,
.grid-4 > *,
.grid-auto > *,
.diag-block-grid > *,
.fix-step-grid > *,
.fix-intro > *,
.post-grid > *,
.sim-page-grid > *,
.sim-block > *,
.calc-layout > *,
.contact-grid > *,
.foot-grid > *,
.tool-detail > *,
.fallback-notes > *,
.dont-grid > *,
.hero-in > *,
.featured-post > * {
  min-width: 0;
}

/* ------------------------------------------------------------- responsive */
@media (max-width: 1080px) {
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .steps-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .sim-block {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .sim-page-grid {
    grid-template-columns: 1fr;
  }
  .post-grid {
    grid-template-columns: 1fr;
  }
  .post-aside {
    position: static;
  }
  .foot-grid {
    grid-template-columns: 1fr 1fr;
  }
  .foot-safety-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .grille {
    display: none;
  }
  .burger {
    display: grid;
  }
  .hero-in {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .hero {
    min-height: 0;
    padding: 32px 0 36px;
  }
  .hero-visual {
    order: -1;
  }
  .calc-layout,
  .contact-grid,
  .diag-block-grid,
  .fix-step-grid,
  .fix-intro,
  .featured-post,
  .fallback-notes {
    grid-template-columns: 1fr;
  }
  .featured-media img {
    min-height: 200px;
  }
  .trust-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .trust-bar li:nth-child(2) {
    border-right: 0;
  }
  .trust-bar li {
    border-bottom: 1px solid var(--line);
  }
  .diag-block-meta {
    margin-left: 0;
    width: 100%;
  }
  .sim-canvas {
    aspect-ratio: 4 / 3;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
  }
  .grid-2,
  .grid-3,
  .grid-4,
  .steps-flow,
  .dont-grid,
  .foot-grid,
  .foot-safety-list,
  .stat-row {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 1.9rem;
  }
  .section {
    padding: 40px 0;
  }
  .section-sm {
    padding: 28px 0;
  }
  .page-hero {
    padding: 26px 0 30px;
  }
  .cta-band-in {
    flex-direction: column;
    align-items: flex-start;
    padding: 26px 22px;
  }
  .tool-detail {
    grid-template-columns: 1fr;
  }
  .tool-detail-art {
    max-width: 220px;
  }
  .trust-bar li {
    border-right: 0;
  }
  .sim-toolbar .btn {
    flex: 1 1 auto;
  }
  .brand-text em {
    display: none;
  }
  .foot-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .post-meta {
    gap: 10px;
  }
  .blog-search input {
    min-width: 0;
    width: 100%;
  }
  .blog-controls {
    flex-direction: column;
    align-items: stretch;
  }
  .table-scroll table {
    font-size: 0.84rem;
  }
  .sim-canvas {
    min-height: 260px;
  }
  /* at phone widths the pill labels get long — wrap instead of clip */
  .btn {
    white-space: normal;
    text-align: center;
    line-height: 1.25;
  }
  .diag-block-copy .btn {
    width: 100%;
  }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .hotspot-dot::after {
    display: none;
  }
  .skeleton {
    animation: none;
  }
}

/* print */
@media print {
  .site-head,
  .site-foot,
  .cta-band,
  .sim-page,
  .sim-section {
    display: none;
  }
  body {
    background: #fff;
    color: #111;
  }
  body::before,
  body::after {
    display: none;
  }
}