/* ==========================================================================
   Flow Restore — chrome bathroom theme, water-blue annotation layer.
   One stylesheet, no framework. Sections:
     01 fonts        02 tokens       03 reset/base    04 typography
     05 layout       06 header       07 buttons       08 tags & badges
     09 cards        10 notices      11 page hero     12 home modules
     13 tables       14 forms        15 footer        16 simulator
     17 blog         18 demo embed   19 utilities     20 responsive
   ========================================================================== */

/* 01 ------------------------------------------------------------- fonts */
@font-face {
  font-family: "Bitter";
  src: url("../fonts/bitter.woff2") format("woff2");
  font-weight: 600 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Source Sans 3";
  src: url("../fonts/source-sans-3.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("../fonts/jetbrains-mono.woff2") format("woff2");
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}

/* 02 ------------------------------------------------------------ tokens */
:root {
  --chrome-50: #f8fafc;
  --chrome-100: #e8ecf0;
  --chrome-200: #d8e0e6;
  --chrome-300: #c4d0d8;
  --chrome-400: #a8b8c4;
  --chrome-500: #8a9ca8;
  --chrome-600: #6e808c;

  --water-900: #1a4a5c;
  --water-800: #2a6a7a;
  --water-600: #2a7a9a;
  --water-500: #4a9ab8;
  --water-400: #7ab8d0;
  --water-300: #a8d4e4;
  --water-200: #d0e8f0;

  --graphite-950: #0c1216;
  --graphite-900: #1a2228;
  --graphite-800: #2a3238;
  --graphite-700: #3a444c;
  --graphite-600: #5a666e;
  --graphite-500: #7a888f;
  --graphite-400: #9aa8b0;

  --red-900: #5c1a14;
  --red-800: #8a2a20;
  --red-600: #c0392b;
  --red-400: #e88878;
  --red-200: #f5c0b8;
  --red-100: #fae0dc;

  --green-900: #1e4a2e;
  --green-700: #2e6a42;
  --green-500: #4a8a5a;
  --green-400: #7aaa88;
  --green-300: #a8c8b4;
  --green-200: #d0e4d8;

  --scale-100: #f5f2ec;
  --scale-200: #ebe5da;
  --scale-300: #d8d0c4;
  --amber: #d4a040;
  --amber-bg: #faf0c4;
  --amber-ink: #7a5210;

  --ink: var(--graphite-900);
  --ink-2: var(--graphite-600);
  --ink-3: var(--graphite-500);
  --line: var(--chrome-200);
  --line-strong: var(--chrome-300);
  --bg: var(--chrome-100);
  --surface: var(--chrome-50);

  --shadow-xs: 0 1px 2px rgba(26, 34, 40, 0.05);
  --shadow-sm: 0 2px 6px rgba(26, 34, 40, 0.07);
  --shadow-md: 0 6px 16px rgba(26, 34, 40, 0.08);
  --shadow-lg: 0 16px 36px rgba(26, 34, 40, 0.1);

  --r-sm: 4px;
  --r-card: 10px;
  --r-lg: 16px;
  --r-pill: 999px;

  --t-color: 0.16s ease;
  --t-card: 0.28s ease;

  --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;

  --w: 1100px;
  --w-narrow: 820px;
  --w-wide: 1280px;
  --gutter: 22px;
  --head-h: 84px;

  --brushed: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='7' height='7'%3E%3Cpath d='M0 7L7 0' stroke='%232A7A9A' stroke-opacity='.05' stroke-width='1'/%3E%3C/svg%3E");
  --stain: radial-gradient(60% 50% at 18% 0%, rgba(42, 122, 154, 0.06), transparent 70%),
    radial-gradient(50% 60% at 92% 20%, rgba(42, 122, 154, 0.05), transparent 70%);
}

/* 03 -------------------------------------------------------- reset/base */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
body {
  margin: 0;
  background-color: var(--bg);
  background-image: var(--brushed);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img,
svg,
canvas {
  max-width: 100%;
}
img {
  display: block;
}
hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 32px 0;
}
::selection {
  background: var(--water-200);
  color: var(--water-900);
}
:focus-visible {
  outline: 2px solid var(--water-600);
  outline-offset: 2px;
}
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 400;
  background: var(--graphite-900);
  color: var(--chrome-50);
  padding: 10px 18px;
  border-radius: var(--r-pill);
  font: 700 0.8rem/1 var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: top var(--t-color);
}
.skip-link:focus {
  top: 10px;
}

/* 04 -------------------------------------------------------- typography */
h1,
h2,
h3,
h4,
h5 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.005em;
  color: var(--ink);
  margin: 0 0 0.6em;
  text-wrap: balance;
}
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 1.1em;
}
a {
  color: var(--water-800);
  text-decoration-color: var(--water-400);
  text-underline-offset: 3px;
  transition: color var(--t-color), text-decoration-color var(--t-color);
}
a:hover {
  color: var(--water-900);
  text-decoration-color: var(--water-600);
}
strong {
  font-weight: 700;
}
small {
  font-size: 0.84rem;
}
code,
kbd,
samp {
  font-family: var(--font-mono);
  font-size: 0.86em;
  background: var(--chrome-100);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 1px 5px;
}
blockquote {
  margin: 26px 0;
  padding: 18px 22px;
  background: var(--surface);
  border-left: 4px solid var(--water-600);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  color: var(--ink);
}
blockquote p {
  font-size: 1.02rem;
  font-style: italic;
  margin-bottom: 8px;
}
blockquote footer {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-2);
  font-style: normal;
}
blockquote cite {
  font-style: normal;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--water-600);
  margin: 0 0 10px;
}
.lede {
  font-size: 1.08rem;
  color: var(--ink-2);
  max-width: 62ch;
  margin: 0 0 1.2em;
}
.muted {
  color: var(--ink-2);
}
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.section-head h2 {
  margin: 0;
}
.section-head p {
  margin: 6px 0 0;
  color: var(--ink-2);
  max-width: 62ch;
}
.section-head .head-link {
  font: 700 0.78rem/1 var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* 05 ------------------------------------------------------------ layout */
.container {
  width: 100%;
  max-width: var(--w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container-narrow {
  max-width: var(--w-narrow);
}
.container-wide {
  max-width: var(--w-wide);
}
main {
  display: block;
}
.section {
  padding: 56px 0;
}
.section-sm {
  padding: 36px 0;
}
.section-tight {
  padding: 40px 0 56px;
}
.section-alt {
  background: rgba(232, 236, 240, 0.55);
  border-block: 1px solid var(--line);
}
.grid {
  display: grid;
  gap: 22px;
}
.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 {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.stack > * + * {
  margin-top: 22px;
}

/* 06 ------------------------------------------------------------ header */
.site-head {
  position: sticky;
  top: 0;
  z-index: 200;
}
.brandbar {
  height: 36px;
  background: var(--chrome-100);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  transition: height 0.24s ease, border-bottom-width 0.24s ease;
}
.brandbar-inner {
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  color: var(--ink);
}
.brand:hover {
  color: var(--ink);
}
.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--water-600);
  color: var(--chrome-50);
  display: grid;
  place-items: center;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25), var(--shadow-xs);
  flex: none;
}
.brand-mark svg {
  width: 16px;
  height: 16px;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.brand-text strong {
  font-family: var(--font-head);
  font-size: 1.02rem;
  letter-spacing: 0.01em;
  color: var(--graphite-900);
}
.brand-text span {
  font-size: 0.52rem;
  font-weight: 700;
  letter-spacing: 0.19em;
  text-transform: uppercase;
  color: var(--water-600);
  margin-top: 2px;
}
.brand-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}
.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-2);
  display: grid;
  place-items: center;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--t-color), color var(--t-color), border-color var(--t-color);
}
.icon-btn:hover {
  background: var(--chrome-200);
  color: var(--ink);
  border-color: var(--line-strong);
}
.icon-btn svg {
  width: 16px;
  height: 16px;
}
.btn-xs {
  padding: 6px 12px;
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  gap: 6px;
}
.btn-xs .badge-3d {
  padding: 2px 6px;
  font-size: 0.56rem;
}
.hamburger {
  width: 38px;
  height: 38px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  background: var(--chrome-50);
  color: var(--ink);
  display: none;
  place-items: center;
  cursor: pointer;
}
.hamburger svg {
  width: 18px;
  height: 18px;
}

/* hose navigation */
.hosenav {
  height: 48px;
  background: var(--chrome-200);
  border-bottom: 1px solid var(--chrome-300);
  transition: box-shadow var(--t-color);
}
.site-head.is-compact .brandbar {
  height: 0;
  border-bottom-width: 0;
}
.site-head.is-compact .hosenav {
  box-shadow: var(--shadow-sm);
}
.hosenav-inner {
  position: relative;
  height: 48px;
  display: flex;
  align-items: flex-start;
}
.hose,
.hose-fill {
  position: absolute;
  top: 11px;
  left: var(--gutter);
  right: var(--gutter);
  height: 4px;
  border-radius: 2px;
  pointer-events: none;
}
.hose {
  background: repeating-linear-gradient(
    90deg,
    var(--chrome-300) 0 3px,
    var(--chrome-400) 3px 4px,
    var(--chrome-300) 4px 7px
  );
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7), inset 0 -1px 0 rgba(26, 34, 40, 0.12);
}
.hose-fill {
  width: var(--fill-w, 0px);
  right: auto;
  background: repeating-linear-gradient(
    90deg,
    var(--water-500) 0 5px,
    var(--water-600) 5px 7px
  );
  box-shadow: 0 0 8px rgba(42, 122, 154, 0.35);
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  overflow: hidden;
}
.hose-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.45) 50%,
    transparent
  );
  animation: flow-pulse 3.2s linear infinite;
}
@keyframes flow-pulse {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(100%);
  }
}
.hose-list {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
  height: 48px;
  flex: 1;
}
.hose-list > li {
  position: relative;
  display: flex;
  justify-content: flex-start;
}
.hose-list > li:first-child {
  margin-left: 0;
}
.hose-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 0 10px 4px;
  background: none;
  border: 0;
  cursor: pointer;
  text-decoration: none;
  color: var(--graphite-600);
  font: 700 0.72rem/1 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  min-height: 48px;
  justify-content: flex-start;
}
.hose-node .node {
  width: 10px;
  height: 10px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--chrome-50);
  border: 2px solid var(--chrome-400);
  box-shadow: 0 0 0 2px var(--chrome-200);
  transition: background var(--t-color), border-color var(--t-color), box-shadow var(--t-color);
  flex: none;
}
.hose-node .hose-label {
  display: inline-block;
  margin-top: 3px;
  padding: 4px 9px;
  border-radius: var(--r-pill);
  background: var(--chrome-50);
  border: 1px solid transparent;
  transition: background var(--t-color), color var(--t-color), border-color var(--t-color);
}
.hose-node:hover .hose-label {
  background: var(--chrome-100);
  color: var(--ink);
  border-color: var(--chrome-300);
}
.hose-node:hover .node {
  border-color: var(--water-400);
  background: var(--water-200);
}
.hose-node.is-active .hose-label,
.hose-node[aria-current="page"] .hose-label {
  background: var(--water-600);
  color: var(--chrome-50);
  border-color: var(--water-600);
}
.hose-node.is-active .node,
.hose-node[aria-current="page"] .node {
  background: var(--water-600);
  border-color: var(--water-500);
  box-shadow: 0 0 12px rgba(42, 122, 154, 0.45), 0 0 0 2px var(--chrome-200);
}
.hose-node .caret {
  width: 7px;
  height: 7px;
  margin-left: 4px;
  vertical-align: 1px;
}
.has-menu[data-open="true"] .caret {
  transform: rotate(180deg);
}
.hosenav-cta {
  margin-left: auto;
  align-self: center;
  display: flex;
  gap: 8px;
  align-items: center;
}
.dropmenu {
  position: absolute;
  top: 46px;
  left: 0;
  width: 330px;
  background: var(--chrome-50);
  border: 1px solid var(--line);
  border-top: 2px solid var(--water-600);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-lg);
  padding: 10px;
  display: none;
  z-index: 210;
}
.has-menu[data-open="true"] .dropmenu {
  display: block;
  animation: menu-in 0.16s ease;
}
@keyframes menu-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
}
.dropmenu a {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 9px 10px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--ink);
  transition: background var(--t-color);
}
.dropmenu a:hover,
.dropmenu a:focus-visible {
  background: var(--chrome-100);
}
.dropmenu a strong {
  display: block;
  font: 700 0.92rem/1.3 var(--font-head);
}
.dropmenu a span {
  display: block;
  font-size: 0.8rem;
  color: var(--ink-2);
  line-height: 1.45;
}
.dropmenu .dm-ico {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--water-200);
  color: var(--water-800);
  display: grid;
  place-items: center;
  flex: none;
  margin-top: 2px;
}
.dropmenu .dm-ico svg {
  width: 14px;
  height: 14px;
}
.dropmenu .dm-all {
  border-top: 1px solid var(--line);
  margin-top: 6px;
  padding-top: 6px;
  font: 700 0.74rem/1 var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--water-800);
}

/* drawer */
.drawer-scrim {
  position: fixed;
  inset: 0;
  background: rgba(12, 18, 22, 0.42);
  z-index: 290;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(86vw, 340px);
  background: var(--chrome-100);
  border-left: 1px solid var(--chrome-300);
  z-index: 300;
  transform: translateX(100%);
  transition: transform 0.24s ease;
  display: flex;
  flex-direction: column;
  padding: 18px 18px 24px;
  overflow-y: auto;
}
body.drawer-open .drawer {
  transform: translateX(0);
}
body.drawer-open .drawer-scrim {
  opacity: 1;
  visibility: visible;
}
body.drawer-open {
  overflow: hidden;
}
.drawer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.drawer-title {
  font: 700 0.72rem/1 var(--font-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--water-600);
}
.drawer-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--chrome-50);
  cursor: pointer;
  display: grid;
  place-items: center;
}
.drawer-nav {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
}
.drawer-nav::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 4px;
  border-radius: 2px;
  background: repeating-linear-gradient(
    180deg,
    var(--chrome-300) 0 3px,
    var(--chrome-400) 3px 4px
  );
}
.drawer-nav li {
  position: relative;
}
.drawer-nav a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 12px;
  border-radius: var(--r-pill);
  text-decoration: none;
  font: 700 0.86rem/1 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--graphite-700);
}
.drawer-nav a::before {
  content: "";
  position: absolute;
  left: -22px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--chrome-50);
  border: 2px solid var(--chrome-400);
}
.drawer-nav a[aria-current="page"] {
  background: var(--water-600);
  color: var(--chrome-50);
}
.drawer-nav a[aria-current="page"]::before {
  background: var(--water-600);
  border-color: var(--water-500);
  box-shadow: 0 0 10px rgba(42, 122, 154, 0.5);
}
.drawer-sub {
  list-style: none;
  margin: 2px 0 8px;
  padding: 0 0 0 4px;
}
.drawer-sub a {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: none;
  color: var(--ink-2);
  min-height: 38px;
}
.drawer-foot {
  margin-top: auto;
  padding-top: 20px;
  display: grid;
  gap: 10px;
}

/* 07 ----------------------------------------------------------- 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: 700 0.9rem/1.1 var(--font-body);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--t-color), color var(--t-color),
    border-color var(--t-color), transform var(--t-color), box-shadow var(--t-color);
}
.btn svg {
  width: 15px;
  height: 15px;
}
.btn-primary {
  background: var(--water-600);
  color: var(--chrome-50);
  box-shadow: 0 2px 0 rgba(26, 74, 92, 0.25);
}
.btn-primary:hover {
  background: var(--water-800);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn-ink {
  background: var(--graphite-900);
  color: var(--chrome-100);
}
.btn-ink:hover {
  background: var(--graphite-800);
  color: #fff;
}
.btn-outline {
  background: var(--chrome-50);
  color: var(--water-800);
  border-color: var(--water-600);
}
.btn-outline:hover {
  background: var(--water-200);
  color: var(--water-900);
}
.btn-ghost {
  background: rgba(232, 236, 240, 0.08);
  color: var(--chrome-100);
  border-color: rgba(196, 208, 216, 0.35);
}
.btn-ghost:hover {
  background: rgba(232, 236, 240, 0.16);
  color: #fff;
  border-color: var(--chrome-300);
}
.btn-danger {
  background: var(--red-600);
  color: #fff;
}
.btn-danger:hover {
  background: var(--red-800);
  color: #fff;
}
.btn-sm {
  padding: 8px 14px;
  font-size: 0.76rem;
}
.btn-lg {
  padding: 14px 26px;
  font-size: 0.98rem;
}
.btn-block {
  display: flex;
  width: 100%;
}
.btn:active {
  transform: translateY(1px);
}
.btn[disabled],
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}
.btn-flow .drop {
  transition: transform 0.2s ease;
}
.btn-flow:hover .drop {
  animation: drop-bob 0.9s ease-in-out infinite;
}
@keyframes drop-bob {
  50% {
    transform: translateY(2px) scale(1.08);
  }
}

/* 08 ------------------------------------------------------- tags/badges */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  font: 700 0.68rem/1.5 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--water-200);
  color: var(--water-900);
  white-space: nowrap;
}
.tag-ink {
  background: var(--graphite-900);
  color: var(--chrome-100);
}
.tag-red {
  background: var(--red-100);
  color: var(--red-800);
}
.tag-green {
  background: var(--green-200);
  color: var(--green-900);
}
.tag-scale {
  background: var(--scale-200);
  color: #6a5c46;
}
.tag-outline {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink-2);
}
.tag-amber {
  background: var(--amber-bg);
  color: var(--amber-ink);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  background: var(--chrome-50);
  color: var(--ink-2);
  font: 700 0.78rem/1 var(--font-body);
  letter-spacing: 0.05em;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--t-color);
}
.chip:hover {
  border-color: var(--water-500);
  color: var(--water-900);
}
.chip[aria-pressed="true"],
.chip.is-active {
  background: var(--water-600);
  border-color: var(--water-600);
  color: var(--chrome-50);
}
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.param-badge {
  display: inline-block;
  font: 500 0.78rem/1.5 var(--font-mono);
  background: var(--chrome-100);
  border: 1px solid var(--chrome-300);
  border-radius: var(--r-sm);
  padding: 1px 6px;
  color: var(--graphite-800);
  white-space: nowrap;
}
.badge-3d {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--r-pill);
  background: var(--water-600);
  color: var(--chrome-50);
  font: 700 0.62rem/1.4 var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.badge-3d svg {
  width: 10px;
  height: 10px;
}
.difficulty-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font: 700 0.66rem/1.5 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: var(--r-pill);
}
.difficulty-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.difficulty-badge.easy {
  background: var(--green-200);
  color: var(--green-900);
}
.difficulty-badge.medium {
  background: var(--amber-bg);
  color: var(--amber-ink);
}
.difficulty-badge.pro {
  background: var(--red-100);
  color: var(--red-800);
}

/* 09 ------------------------------------------------------------- cards */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-sm);
  color: var(--ink);
  text-decoration: none;
  overflow: hidden;
  transition: transform var(--t-card), box-shadow var(--t-card), border-color var(--t-card);
  min-height: 44px;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--water-400), transparent);
  opacity: 0;
  transition: opacity var(--t-card);
  z-index: 2;
}
a.card:hover,
a.card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--water-500);
  color: var(--ink);
}
a.card:hover::before,
a.card:focus-visible::before {
  opacity: 1;
}
a.card:active {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.card-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--chrome-100);
  border-bottom: 1px solid var(--line);
}
.card-media img,
.card-media svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
a.card:hover .card-media img,
a.card:hover .card-media svg {
  transform: scale(1.04);
}
.card-body {
  padding: 18px;
  flex: 1;
}
.card-title {
  font-family: var(--font-head);
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 6px;
}
.card-desc {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-2);
  line-height: 1.55;
}
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  background: rgba(232, 236, 240, 0.35);
}
.card-arrow {
  color: var(--water-600);
  font-size: 1rem;
  transition: transform var(--t-color);
}
a.card:hover .card-arrow {
  transform: translateX(3px);
}

/* diagnostics */
.diag-card .card-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.diag-ico {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--water-200);
  color: var(--water-800);
  display: grid;
  place-items: center;
  margin-bottom: 4px;
}
.diag-ico svg {
  width: 24px;
  height: 24px;
}
.diag-card .card-foot {
  justify-content: space-between;
}

/* tools */
.tool-card .card-media {
  aspect-ratio: 16 / 10;
  background: var(--chrome-50);
  display: grid;
  place-items: center;
  padding: 14px;
}
.tool-card .card-media svg {
  object-fit: contain;
}
.part-card .price {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--water-800);
  font-weight: 500;
}
.part-card .fits {
  font-size: 0.78rem;
  color: var(--ink-2);
}

/* blog */
.blog-card .card-media {
  aspect-ratio: 16 / 9;
}
.blog-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 500 0.7rem/1.4 var(--font-mono);
  color: var(--ink-3);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.blog-meta span + span::before {
  content: "·";
  margin-right: 8px;
  color: var(--chrome-400);
}

/* qa + quote */
.qa-card,
.quote-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--water-600);
  border-radius: var(--r-card);
  padding: 20px 20px 18px;
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-card), box-shadow var(--t-card), border-color var(--t-card);
}
a.qa-card:hover,
a.quote-card:hover,
a.qa-card:focus-visible,
a.quote-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--water-600);
  border-left-color: var(--water-800);
  color: var(--ink);
}
a.qa-card:active,
a.quote-card:active {
  transform: translateY(-1px);
}
.qa-card .q {
  font-size: 1rem;
  font-style: italic;
  line-height: 1.55;
  margin: 0;
  color: var(--ink);
}
.qa-card .src,
.quote-card .src {
  font: 500 0.72rem/1.4 var(--font-mono);
  color: var(--ink-3);
  letter-spacing: 0.04em;
}
.qa-card .a {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.6;
  display: flex;
  gap: 7px;
}
.qa-card .a .check {
  color: var(--green-500);
  flex: none;
  font-weight: 700;
}
.qa-card .card-arrow {
  align-self: flex-end;
  margin-top: auto;
}
.quote-card .qmark {
  font-family: var(--font-head);
  font-size: 2.6rem;
  line-height: 0.6;
  color: var(--water-300);
  margin-bottom: -6px;
}
.quote-card .q {
  font-size: 0.92rem;
  line-height: 1.6;
  margin: 0;
  color: var(--graphite-800);
}
.quote-card .src {
  margin-top: auto;
}

/* sim entry card */
.sim-card {
  background: var(--graphite-900);
  color: var(--chrome-100);
  border-color: var(--graphite-700);
}
.sim-card .card-media {
  background: var(--graphite-950);
  border-color: var(--graphite-700);
  aspect-ratio: 16 / 10;
}
.sim-card .card-title {
  color: var(--chrome-50);
}
.sim-card .card-desc {
  color: var(--chrome-300);
}
.sim-card .card-foot {
  background: rgba(12, 18, 22, 0.5);
  border-color: var(--graphite-700);
}
a.sim-card:hover {
  color: var(--chrome-100);
  border-color: var(--water-500);
}

/* demo card */
.demo-card {
  position: relative;
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 14px;
  align-items: center;
  padding: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  text-decoration: none;
  color: var(--ink);
  box-shadow: var(--shadow-xs);
  transition: transform var(--t-card), box-shadow var(--t-card), border-color var(--t-card);
}
a.demo-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--water-500);
  color: var(--ink);
}
.demo-card .thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 6px;
  overflow: hidden;
  background: var(--graphite-900);
}
.demo-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.demo-card .play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--chrome-50);
}
.demo-card .play svg {
  width: 30px;
  height: 30px;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.45));
}
.demo-card h4 {
  margin: 0 0 4px;
  font-size: 0.96rem;
}
.demo-card p {
  margin: 0 0 6px;
  font-size: 0.8rem;
  color: var(--ink-2);
  line-height: 1.45;
}

/* 10 ---------------------------------------------------------- notices */
.notice {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--r-card);
  border: 1px solid var(--line);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0 0 20px;
}
.notice svg {
  width: 18px;
  height: 18px;
  flex: none;
  margin-top: 2px;
}
.notice p {
  margin: 0;
}
.notice strong {
  display: block;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
.notice-safety {
  background: var(--red-100);
  border-color: var(--red-400);
  color: var(--red-800);
}
.notice-info {
  background: var(--water-200);
  border-color: var(--water-400);
  color: var(--water-900);
}
.notice-warn {
  background: var(--amber-bg);
  border-color: var(--amber);
  color: var(--amber-ink);
}
.notice-neutral {
  background: var(--chrome-100);
  border-color: var(--line-strong);
  color: var(--graphite-700);
}
.tip-box {
  padding: 14px 18px;
  border-left: 4px solid var(--water-600);
  background: rgba(208, 232, 240, 0.45);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  font-size: 0.92rem;
  margin: 22px 0;
}
.tip-box strong {
  display: block;
  font: 700 0.72rem/1.4 var(--font-body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--water-800);
  margin-bottom: 4px;
}
.tip-box p:last-child {
  margin-bottom: 0;
}
.tip-box.warn {
  border-left-color: var(--amber);
  background: rgba(250, 240, 196, 0.55);
}
.tip-box.warn strong {
  color: var(--amber-ink);
}
.tip-box.ok {
  border-left-color: var(--green-500);
  background: rgba(208, 228, 216, 0.55);
}
.tip-box.ok strong {
  color: var(--green-900);
}
.tip-box.note {
  border-left-color: var(--water-600);
}
.legal-note {
  background: var(--chrome-50);
  border-left: 4px solid var(--water-600);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  padding: 14px 18px;
  font: 400 0.84rem/1.7 var(--font-mono);
  color: var(--graphite-700);
  margin: 24px 0;
}
.empty-state {
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-card);
  background: rgba(248, 250, 252, 0.6);
  padding: 40px 24px;
  text-align: center;
  color: var(--ink-2);
}
.empty-state h3 {
  margin-bottom: 6px;
}
.safety-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 11px 16px;
  border: 1px solid var(--red-400);
  border-left: 4px solid var(--red-600);
  border-radius: var(--r-card);
  background: var(--red-100);
  color: var(--red-800);
  font: 700 0.74rem/1.4 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.safety-strip svg {
  width: 18px;
  height: 18px;
  flex: none;
}
.safety-strip .sep {
  color: var(--red-400);
}
.difficulty-indicator,
.flow-indicator,
.webgl-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 700 0.68rem/1.4 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  background: var(--chrome-100);
  border: 1px solid var(--line-strong);
  color: var(--graphite-700);
}
.difficulty-indicator::before,
.flow-indicator::before,
.webgl-status::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}
.difficulty-indicator.easy,
.flow-indicator.restored,
.webgl-status.ready {
  background: var(--green-200);
  border-color: var(--green-300);
  color: var(--green-900);
}
.difficulty-indicator.medium,
.flow-indicator.low,
.webgl-status.loading {
  background: var(--amber-bg);
  border-color: var(--amber);
  color: var(--amber-ink);
}
.difficulty-indicator.pro,
.flow-indicator.blocked,
.webgl-status.error {
  background: var(--red-100);
  border-color: var(--red-400);
  color: var(--red-800);
}
.webgl-status.fallback {
  background: var(--chrome-200);
  border-color: var(--chrome-400);
  color: var(--graphite-700);
}

/* 11 -------------------------------------------------------- page hero */
.page-hero {
  position: relative;
  background-color: var(--graphite-900);
  background-image: var(--brushed), var(--stain);
  color: var(--chrome-100);
  border-bottom: 3px solid var(--water-600);
  padding: 34px 0 44px;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -60px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  border: 1px solid rgba(122, 184, 208, 0.14);
  box-shadow: inset 0 0 0 40px rgba(42, 122, 154, 0.04),
    inset 0 0 0 90px rgba(42, 122, 154, 0.03);
  pointer-events: none;
}
.page-hero h1 {
  color: var(--chrome-50);
  margin-bottom: 12px;
  max-width: 20ch;
}
.page-hero .lede {
  color: var(--chrome-300);
  margin-bottom: 0;
}
.page-hero .eyebrow {
  color: var(--water-400);
}
.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 500 0.68rem/1.4 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--chrome-400);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.crumbs a {
  color: var(--chrome-300);
  text-decoration: none;
}
.crumbs a:hover {
  color: var(--water-300);
}
.crumbs .sep {
  color: var(--graphite-500);
}
.crumbs [aria-current="page"] {
  color: var(--water-300);
}
.page-hero-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

/* 12 ------------------------------------------------------ home modules */
.hero {
  position: relative;
  min-height: 440px;
  display: flex;
  align-items: center;
  background-color: var(--chrome-100);
  background-image: var(--brushed), var(--stain);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 34px;
  align-items: center;
  padding: 44px 0;
  z-index: 1;
}
.hero-copy {
  max-width: 34rem;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: var(--chrome-50);
  border: 1px solid var(--chrome-300);
  color: var(--water-800);
  font: 800 0.66rem/1.4 var(--font-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  box-shadow: var(--shadow-xs);
  margin-bottom: 16px;
}
.hero h1 {
  font-size: clamp(1.95rem, 4.2vw, 2.9rem);
  margin-bottom: 14px;
}
.hero .lede {
  font-size: 1.1rem;
  color: var(--graphite-600);
  margin-bottom: 24px;
}
.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.hero-art {
  position: relative;
  filter: drop-shadow(0 18px 28px rgba(26, 34, 40, 0.12));
}
.hero-art svg {
  width: 100%;
  height: auto;
  display: block;
}
.hero-note {
  position: absolute;
  right: 6%;
  bottom: 4%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  background: rgba(248, 250, 252, 0.92);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  font: 500 0.7rem/1.3 var(--font-mono);
  color: var(--graphite-700);
  box-shadow: var(--shadow-sm);
}
.hero-note .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red-600);
}

.trust {
  background: var(--graphite-900);
  color: var(--chrome-300);
  padding: 26px 0;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.trust-item {
  display: flex;
  gap: 11px;
  align-items: flex-start;
}
.trust-item svg {
  width: 20px;
  height: 20px;
  color: var(--water-400);
  flex: none;
  margin-top: 2px;
}
.trust-item strong {
  display: block;
  font: 700 0.86rem/1.3 var(--font-head);
  color: var(--chrome-50);
  margin-bottom: 2px;
}
.trust-item span {
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--chrome-400);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}
.step {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}
.step-art {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--chrome-100);
  border-bottom: 1px solid var(--line);
}
.step-art svg {
  width: 100%;
  height: 100%;
}
.step-num {
  position: absolute;
  top: 10px;
  left: 10px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--water-600);
  color: var(--chrome-50);
  display: grid;
  place-items: center;
  font: 700 0.86rem/1 var(--font-mono);
  box-shadow: var(--shadow-sm);
}
.step-body {
  padding: 14px 16px 18px;
}
.step-body .tag {
  margin-bottom: 6px;
}
.step-body h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}
.step-body p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--ink-2);
  line-height: 1.5;
}

/* 3D preview band */
.sim-band {
  background: var(--graphite-950);
  color: var(--chrome-100);
  padding: 44px 0 48px;
  position: relative;
  overflow: hidden;
}
.sim-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 80% at 70% 20%, rgba(42, 122, 154, 0.22), transparent 70%);
  pointer-events: none;
}
.sim-band .container {
  position: relative;
}
.sim-band h2 {
  color: var(--chrome-50);
}
.sim-band p {
  color: var(--chrome-300);
}
.sim-band-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 28px;
  align-items: center;
}
.preview-stage {
  position: relative;
  aspect-ratio: 16 / 11;
  border-radius: var(--r-lg);
  border: 1px solid var(--graphite-700);
  background: radial-gradient(80% 80% at 50% 20%, #1c272e, #0c1216);
  overflow: hidden;
  box-shadow: inset 0 0 60px rgba(0, 0, 0, 0.6), var(--shadow-lg);
}
.preview-stage canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
  touch-action: pan-y;
}
.preview-loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  gap: 10px;
  color: var(--chrome-400);
  font: 500 0.72rem/1.4 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(12, 18, 22, 0.6);
  transition: opacity 0.3s ease;
}
.preview-loading.is-hidden {
  opacity: 0;
  pointer-events: none;
}
.preview-toolbar {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  z-index: 2;
}
.preview-toolbar .mono-label {
  font: 500 0.66rem/1.4 var(--font-mono);
  color: var(--chrome-400);
  letter-spacing: 0.08em;
}
.preview-toolbar > a {
  margin-left: auto;
}
.preview-hint {
  position: absolute;
  top: 12px;
  left: 12px;
  font: 500 0.66rem/1.4 var(--font-mono);
  color: var(--chrome-400);
  letter-spacing: 0.08em;
  z-index: 2;
}
.sim-band .sim-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 22px;
  display: grid;
  gap: 10px;
}
.sim-band .sim-list li {
  display: flex;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--chrome-300);
  line-height: 1.5;
}
.sim-band .sim-list svg {
  width: 16px;
  height: 16px;
  color: var(--water-400);
  flex: none;
  margin-top: 3px;
}

/* discussion strip */
.disc-strip {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 4px 4px 14px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}
.disc-strip::-webkit-scrollbar {
  height: 6px;
}
.disc-strip::-webkit-scrollbar-thumb {
  background: var(--chrome-300);
  border-radius: 3px;
}
.disc-tag {
  flex: none;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 240px;
  max-width: 300px;
  padding: 13px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  text-decoration: none;
  color: var(--ink);
  box-shadow: var(--shadow-xs);
  transition: border-color var(--t-color), box-shadow var(--t-color), transform var(--t-card);
}
.disc-tag:hover {
  border-color: var(--water-500);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  color: var(--ink);
}
.disc-tag strong {
  font: 600 0.86rem/1.35 var(--font-body);
  display: block;
}
.disc-tag .src {
  font: 500 0.68rem/1.4 var(--font-mono);
  color: var(--ink-3);
  letter-spacing: 0.04em;
}

.cta-band {
  position: relative;
  background-color: var(--water-600);
  background-image: var(--brushed), var(--stain);
  border-radius: var(--r-lg);
  padding: 40px 44px;
  color: var(--chrome-50);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.4fr auto;
  gap: 28px;
  align-items: center;
}
.cta-band::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -70px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 24px solid rgba(255, 255, 255, 0.07);
  pointer-events: none;
}
.cta-band h2 {
  color: var(--chrome-50);
  margin-bottom: 8px;
}
.cta-band p {
  margin: 0;
  color: var(--water-200);
  max-width: 52ch;
}
.cta-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.cta-band .btn-primary {
  background: var(--chrome-50);
  color: var(--water-900);
}
.cta-band .btn-primary:hover {
  background: #fff;
  color: var(--water-900);
}
.cta-band .btn-ghost {
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

/* 13 ------------------------------------------------------------ tables */
.table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  min-width: 720px;
}
table.data thead th {
  background: var(--water-600);
  color: var(--chrome-50);
  text-align: left;
  font: 700 0.72rem/1.4 var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 12px 14px;
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 1;
}
table.data tbody td {
  padding: 13px 14px;
  border-top: 1px solid var(--line);
  vertical-align: top;
  color: var(--graphite-700);
  line-height: 1.55;
}
table.data tbody tr:nth-child(even) {
  background: rgba(232, 236, 240, 0.32);
}
table.data tbody tr:hover {
  background: rgba(168, 212, 228, 0.28);
}
table.data tbody th {
  text-align: left;
  font-weight: 700;
  color: var(--ink);
  padding: 13px 14px;
  border-top: 1px solid var(--line);
  vertical-align: top;
}
table.data .src {
  font: 500 0.72rem/1.4 var(--font-mono);
  white-space: nowrap;
}
table.data .src a {
  color: var(--water-800);
}
table.data caption {
  caption-side: top;
  text-align: left;
  padding: 12px 14px 0;
  font-size: 0.8rem;
  color: var(--ink-2);
}
.table-legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font: 500 0.72rem/1.4 var(--font-mono);
  color: var(--ink-3);
  margin-top: 10px;
}

/* 14 ------------------------------------------------------------- forms */
.field {
  display: block;
  margin-bottom: 16px;
}
.field > span,
.field-label {
  display: block;
  font: 700 0.72rem/1.4 var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite-600);
  margin-bottom: 6px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  background: var(--chrome-50);
  color: var(--ink);
  font: 400 0.94rem/1.5 var(--font-body);
  transition: border-color var(--t-color), box-shadow var(--t-color);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--water-600);
  box-shadow: 0 0 0 3px rgba(42, 122, 154, 0.16);
}
.field textarea {
  min-height: 130px;
  resize: vertical;
}
.field .hint {
  display: block;
  font-size: 0.76rem;
  color: var(--ink-3);
  margin-top: 4px;
  letter-spacing: 0;
  text-transform: none;
  font-weight: 400;
}
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 22px;
  background: transparent;
  cursor: pointer;
  margin: 0;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 2px;
  background: var(--chrome-300);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  margin-top: -6px;
  border-radius: 50%;
  background: var(--water-600);
  border: 2px solid var(--chrome-50);
  box-shadow: 0 1px 4px rgba(26, 34, 40, 0.3);
}
input[type="range"]::-moz-range-track {
  height: 4px;
  border-radius: 2px;
  background: var(--chrome-300);
}
input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--water-600);
  border: 2px solid var(--chrome-50);
}
.range-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.range-row .val {
  font: 500 0.78rem/1 var(--font-mono);
  color: var(--water-800);
  background: var(--chrome-100);
  border: 1px solid var(--chrome-300);
  border-radius: var(--r-sm);
  padding: 3px 7px;
  min-width: 54px;
  text-align: right;
}
.range-row label {
  font: 600 0.8rem/1.4 var(--font-body);
  color: var(--graphite-700);
  grid-column: 1 / -1;
  margin-bottom: -4px;
}
.search-bar {
  display: flex;
  gap: 10px;
  max-width: 560px;
}
.search-bar input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  background: var(--chrome-50);
  color: var(--ink);
  font: 400 0.94rem/1.5 var(--font-body);
  transition: border-color var(--t-color), box-shadow var(--t-color);
}
.search-bar input:focus {
  outline: none;
  border-color: var(--water-600);
  box-shadow: 0 0 0 3px rgba(42, 122, 154, 0.16);
}
.blog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.blog-toolbar .search-bar {
  width: min(320px, 100%);
  max-width: 320px;
}

/* 15 ------------------------------------------------------------ footer */
.site-foot {
  background: var(--graphite-950);
  color: var(--chrome-300);
  padding: 52px 0 22px;
  margin-top: 0;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 32px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--graphite-800);
}
.foot-brand .brand-text strong {
  color: var(--chrome-50);
}
.foot-brand p {
  font-size: 0.84rem;
  color: var(--chrome-400);
  line-height: 1.6;
  margin: 14px 0;
  max-width: 34ch;
}
.foot-social {
  display: flex;
  gap: 8px;
}
.foot-social a {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--graphite-700);
  color: var(--chrome-300);
  display: grid;
  place-items: center;
  transition: border-color var(--t-color), color var(--t-color), background var(--t-color);
}
.foot-social a:hover {
  border-color: var(--water-500);
  color: var(--water-300);
  background: rgba(42, 122, 154, 0.14);
}
.foot-social svg {
  width: 14px;
  height: 14px;
}
.foot-ver {
  display: block;
  margin-top: 14px;
  font: 400 0.66rem/1.4 var(--font-mono);
  color: var(--graphite-500);
  letter-spacing: 0.06em;
}
.site-foot h4 {
  color: var(--chrome-50);
  font: 700 0.72rem/1.4 var(--font-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.foot-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}
.foot-list a {
  color: var(--chrome-400);
  text-decoration: none;
  font-size: 0.86rem;
}
.foot-list a:hover {
  color: var(--water-300);
}
.foot-sub p {
  font-size: 0.82rem;
  color: var(--chrome-400);
  margin-bottom: 10px;
}
.sub-form {
  display: flex;
  gap: 6px;
}
.sub-form input {
  flex: 1;
  min-width: 0;
  padding: 9px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--graphite-700);
  background: var(--graphite-900);
  color: var(--chrome-100);
  font-size: 0.84rem;
}
.sub-form input::placeholder {
  color: var(--graphite-500);
}
.sub-form input:focus {
  outline: 2px solid var(--water-500);
  outline-offset: 1px;
}
.sub-form button {
  border-radius: var(--r-pill);
  border: 0;
  background: var(--water-600);
  color: var(--chrome-50);
  padding: 0 16px;
  font: 700 0.72rem/1 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}
.sub-form button:hover {
  background: var(--water-500);
}
.foot-note {
  margin-top: 8px;
  font-size: 0.7rem;
  color: var(--graphite-500);
}
.disclaimer-block {
  margin-top: 26px;
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 12px;
  padding: 16px 18px;
  border: 1px solid var(--graphite-700);
  border-left: 3px solid var(--water-600);
  border-radius: var(--r-card);
  background: rgba(42, 122, 154, 0.07);
}
.disclaimer-block svg {
  width: 22px;
  height: 22px;
  color: var(--water-400);
}
.disclaimer-block strong {
  display: block;
  color: var(--chrome-100);
  font: 700 0.76rem/1.4 var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.disclaimer-block p {
  margin: 0 0 6px;
  font-size: 0.78rem;
  color: var(--chrome-400);
  line-height: 1.6;
}
.foot-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 18px;
  font-size: 0.76rem;
  color: var(--graphite-500);
}
.foot-bottom nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.foot-bottom a {
  color: var(--chrome-400);
  text-decoration: none;
}
.foot-bottom a:hover {
  color: var(--water-300);
}
.rinse-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--graphite-700);
  color: var(--water-300);
  font: 700 0.64rem/1.4 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* 16 --------------------------------------------------------- simulator */
.sim-page {
  background: var(--graphite-950);
  color: var(--chrome-100);
  min-height: 100vh;
}
.sim-page .site-foot {
  margin-top: 0;
}
.sim-wrap {
  padding: 18px 0 40px;
}
.sim-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.sim-top h1 {
  color: var(--chrome-50);
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  margin: 0;
}
.sim-top .sub {
  font: 500 0.72rem/1.4 var(--font-mono);
  color: var(--chrome-400);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 4px;
}
.sim-status-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.sim-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 344px;
  gap: 16px;
  align-items: start;
}
.sim-stage {
  position: relative;
  border: 1px solid var(--graphite-700);
  border-radius: var(--r-card);
  background: radial-gradient(90% 80% at 50% 10%, #1b262d, #080d10 75%);
  overflow: hidden;
  min-height: 520px;
  aspect-ratio: 16 / 10;
}
.sim-stage canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
  touch-action: none;
}
.sim-stage .stage-hud {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  gap: 8px;
  align-items: center;
  z-index: 3;
}
.sim-stage .stage-hint {
  position: absolute;
  bottom: 12px;
  left: 12px;
  font: 500 0.68rem/1.55 var(--font-mono);
  color: rgba(232, 236, 240, 0.9);
  letter-spacing: 0.04em;
  z-index: 3;
  max-width: min(72%, 420px);
  background: rgba(8, 13, 16, 0.72);
  border: 1px solid rgba(58, 68, 76, 0.9);
  border-radius: 6px;
  padding: 7px 10px;
  backdrop-filter: blur(4px);
}
.sim-loading {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: grid;
  place-items: center;
  background: rgba(8, 13, 16, 0.82);
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.sim-loading.is-hidden {
  opacity: 0;
  visibility: hidden;
}
.sim-loading .box {
  width: min(340px, 80%);
  text-align: center;
}
.sim-loading .bar {
  height: 4px;
  border-radius: 2px;
  background: var(--graphite-700);
  overflow: hidden;
  margin-top: 12px;
}
.sim-loading .bar i {
  display: block;
  height: 100%;
  width: 30%;
  background: var(--water-500);
  animation: load-slide 1.1s ease-in-out infinite;
}
@keyframes load-slide {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(340%);
  }
}
.sim-loading p {
  font: 500 0.72rem/1.5 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--chrome-400);
  margin: 0;
}
.sim-error {
  position: absolute;
  inset: 0;
  z-index: 6;
  display: none;
  place-items: center;
  background: rgba(8, 13, 16, 0.94);
  text-align: center;
  padding: 24px;
}
.sim-error.show {
  display: grid;
}
.sim-error h3 {
  color: var(--chrome-50);
}
.sim-error p {
  color: var(--chrome-400);
  font-size: 0.88rem;
  max-width: 44ch;
  margin: 0 auto 16px;
}
.sim-error .actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.sim-panel {
  display: grid;
  gap: 12px;
}
.panel {
  background: var(--graphite-900);
  border: 1px solid var(--graphite-700);
  border-radius: var(--r-card);
  padding: 14px;
}
.panel h3 {
  font: 700 0.72rem/1.4 var(--font-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--water-300);
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.panel h3 .count {
  font: 500 0.68rem/1 var(--font-mono);
  color: var(--chrome-400);
  letter-spacing: 0.04em;
}
.step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 3px;
  counter-reset: s;
}
.step-item {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  width: 100%;
  text-align: left;
  background: none;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 6px 8px;
  color: var(--chrome-300);
  font: 400 0.78rem/1.4 var(--font-body);
  cursor: pointer;
  transition: background var(--t-color), border-color var(--t-color), color var(--t-color);
}
.step-item:hover {
  background: rgba(232, 236, 240, 0.06);
  color: var(--chrome-50);
}
.step-item .idx {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--graphite-700);
  font: 500 0.6rem/16px var(--font-mono);
  text-align: center;
  flex: none;
  color: var(--chrome-400);
}
.step-item[data-state="done"] {
  color: var(--green-300);
}
.step-item[data-state="done"] .idx {
  background: var(--green-700);
  border-color: var(--green-500);
  color: #fff;
}
.step-item[data-state="active"] {
  background: rgba(42, 122, 154, 0.18);
  border-color: var(--water-600);
  color: var(--chrome-50);
}
.step-item[data-state="active"] .idx {
  background: var(--water-600);
  border-color: var(--water-400);
  color: #fff;
}
.step-item[data-state="warn"] .idx {
  background: var(--red-800);
  border-color: var(--red-600);
  color: #fff;
}
.panel .btn-row {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  flex-wrap: wrap;
}
.panel .btn {
  font-size: 0.68rem;
  padding: 7px 11px;
  letter-spacing: 0.07em;
}
.slider-row {
  margin-bottom: 11px;
}
.slider-row:last-child {
  margin-bottom: 0;
}
.slider-row .lab {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  font: 500 0.72rem/1.4 var(--font-mono);
  color: var(--chrome-300);
  margin-bottom: 3px;
  letter-spacing: 0.04em;
}
.slider-row .lab b {
  color: var(--water-300);
  font-weight: 500;
}
.sim-page input[type="range"]::-webkit-slider-runnable-track {
  background: var(--graphite-700);
}
.sim-page input[type="range"]::-moz-range-track {
  background: var(--graphite-700);
}
.sim-page input[type="range"]::-webkit-slider-thumb {
  background: var(--water-500);
  border-color: var(--graphite-900);
}
.sim-page input[type="range"]::-moz-range-thumb {
  background: var(--water-500);
  border-color: var(--graphite-900);
}
.preset-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.preset-btn {
  text-align: left;
  background: rgba(232, 236, 240, 0.05);
  border: 1px solid var(--graphite-700);
  border-radius: 6px;
  color: var(--chrome-300);
  padding: 7px 9px;
  font: 500 0.68rem/1.3 var(--font-body);
  cursor: pointer;
  transition: all var(--t-color);
}
.preset-btn:hover {
  border-color: var(--water-500);
  color: var(--chrome-50);
  background: rgba(42, 122, 154, 0.16);
}
.preset-btn[aria-pressed="true"] {
  border-color: var(--water-500);
  background: rgba(42, 122, 154, 0.26);
  color: #fff;
}
.score-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.score {
  background: rgba(12, 18, 22, 0.6);
  border: 1px solid var(--graphite-700);
  border-radius: 6px;
  padding: 8px 10px;
}
.score span {
  display: block;
  font: 500 0.62rem/1.4 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--chrome-400);
}
.score b {
  font: 600 1.15rem/1.2 var(--font-mono);
  color: var(--chrome-50);
}
.score b small {
  font-size: 0.62rem;
  color: var(--chrome-400);
  font-weight: 400;
}
.sim-log {
  font: 400 0.72rem/1.5 var(--font-mono);
  color: var(--chrome-400);
  max-height: 116px;
  overflow-y: auto;
  display: grid;
  gap: 4px;
}
.sim-log .row {
  display: flex;
  gap: 6px;
}
.sim-log .row i {
  color: var(--graphite-500);
  font-style: normal;
  flex: none;
}
.sim-log .row.err {
  color: var(--red-400);
}
.sim-log .row.ok {
  color: var(--green-400);
}
.sim-toast {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.96);
  z-index: 7;
  padding: 12px 18px;
  border-radius: var(--r-card);
  background: rgba(12, 18, 22, 0.92);
  border: 1px solid var(--water-500);
  color: var(--chrome-50);
  font: 600 0.84rem/1.4 var(--font-body);
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  max-width: 78%;
}
.sim-toast.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}
.sim-toast.err {
  border-color: var(--red-600);
  background: rgba(92, 26, 20, 0.94);
}
.sim-toast.ok {
  border-color: var(--green-500);
  background: rgba(30, 74, 46, 0.94);
}
.sim-fallback {
  position: absolute;
  inset: 0;
  overflow: auto;
  background: #0c1216;
  padding: 18px;
  z-index: 4;
}
.sim-fallback h3 {
  color: var(--chrome-50);
  margin-bottom: 10px;
  font-size: 1rem;
}
.fb-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.fb-steps li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--chrome-300);
  line-height: 1.5;
  border: 1px solid var(--graphite-700);
  border-radius: 6px;
  padding: 8px 10px;
}
.fb-steps b {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--water-600);
  color: #fff;
  display: grid;
  place-items: center;
  font: 600 0.66rem/1 var(--font-mono);
}
.fb-note {
  font: 500 0.68rem/1.5 var(--font-mono);
  color: var(--chrome-400);
  margin-top: 12px;
}

/* 17 -------------------------------------------------------------- blog */
.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 250px;
  gap: 40px;
  align-items: start;
  padding: 40px 0 56px;
}
.article {
  min-width: 0;
  font-size: 1.02rem;
}
.article > p,
.article > ul,
.article > ol,
.article > h2,
.article > h3,
.article > h4,
.article > blockquote,
.article > .tip-box,
.article > .notice,
.article > .table-wrap,
.article > figure,
.article > .legal-note,
.article > .demo-embed,
.article > .callout {
  max-width: 72ch;
}
.article h2 {
  margin-top: 2em;
  padding-top: 0.2em;
  scroll-margin-top: 110px;
}
.article h3 {
  margin-top: 1.6em;
  scroll-margin-top: 110px;
}
.article ul,
.article ol {
  padding-left: 1.25em;
  margin: 0 0 1.2em;
}
.article li {
  margin-bottom: 0.45em;
}
.article li::marker {
  color: var(--water-600);
}
.article figure {
  margin: 28px 0;
}
.article figure img,
.article figure svg {
  border-radius: var(--r-card);
  border: 1px solid var(--line);
  background: var(--surface);
}
.article figcaption {
  font: 400 0.78rem/1.5 var(--font-mono);
  color: var(--ink-3);
  margin-top: 8px;
}
.article-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
  font: 500 0.74rem/1.4 var(--font-mono);
  color: var(--chrome-400);
  margin-top: 14px;
}
.article-meta .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--graphite-500);
}
.toc {
  position: sticky;
  top: 108px;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: var(--surface);
  padding: 16px;
  box-shadow: var(--shadow-xs);
}
.toc h2 {
  font: 700 0.7rem/1.4 var(--font-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--water-600);
  margin: 0 0 10px;
}
.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  counter-reset: toc;
}
.toc a {
  display: block;
  padding: 5px 8px;
  border-radius: 4px;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--ink-2);
  text-decoration: none;
  border-left: 2px solid transparent;
}
.toc a:hover,
.toc a.is-active {
  background: var(--chrome-100);
  color: var(--water-900);
  border-left-color: var(--water-600);
}
.toc .toc-sub a {
  padding-left: 18px;
  font-size: 0.78rem;
}
.article-foot {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding-top: 24px;
  max-width: 72ch;
}
.share-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 16px 0;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 18px;
}
.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.post-nav a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-width: 46%;
  text-decoration: none;
  font-size: 0.86rem;
  color: var(--ink);
}
.post-nav a span {
  font: 500 0.68rem/1.4 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.post-nav a:hover span {
  color: var(--water-600);
}
.featured-post {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: var(--ink);
  transition: transform var(--t-card), box-shadow var(--t-card), border-color var(--t-card);
}
.featured-post:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--water-500);
  color: var(--ink);
}
.featured-post .fp-art {
  background: var(--chrome-100);
  min-height: 280px;
}
.featured-post .fp-art svg,
.featured-post .fp-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.featured-post .fp-body {
  padding: 30px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.featured-post h2 {
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  margin-bottom: 10px;
}
.featured-post p {
  color: var(--ink-2);
  margin-bottom: 16px;
}
.blog-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.pager {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-top: 34px;
}
.pager button,
.pager a {
  min-width: 38px;
  height: 38px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-2);
  display: grid;
  place-items: center;
  font: 600 0.82rem/1 var(--font-mono);
  cursor: pointer;
  text-decoration: none;
}
.pager .is-active {
  background: var(--water-600);
  border-color: var(--water-600);
  color: var(--chrome-50);
}

/* 18 -------------------------------------------------------- demo embed */
.demo-embed {
  position: relative;
  margin: 30px 0;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: linear-gradient(180deg, var(--chrome-50), var(--chrome-100));
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.demo-canvas {
  position: relative;
  aspect-ratio: 16 / 9;
  min-height: 240px;
  background: radial-gradient(80% 80% at 50% 30%, #eef3f6, #dfe7ec);
  overflow: hidden;
}
.demo-canvas canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
  touch-action: pan-y;
}
.demo-embed figcaption {
  padding: 10px 16px;
  font: 400 0.8rem/1.5 var(--font-mono);
  color: var(--ink-2);
  border-top: 1px solid var(--line);
  background: rgba(248, 250, 252, 0.9);
}
.demo-controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 48px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 10px;
  background: rgba(232, 236, 240, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid rgba(196, 208, 216, 0.8);
  z-index: 2;
}
.demo-controls button {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--chrome-300);
  background: rgba(248, 250, 252, 0.9);
  color: var(--water-800);
  display: grid;
  place-items: center;
  cursor: pointer;
  flex: none;
  transition: background var(--t-color), border-color var(--t-color);
}
.demo-controls button:hover {
  background: var(--chrome-50);
  border-color: var(--water-500);
}
.demo-controls button svg {
  width: 14px;
  height: 14px;
}
.demo-controls .spacer {
  flex: 1;
}
.demo-controls label {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 500 0.72rem/1 var(--font-mono);
  color: var(--graphite-700);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.demo-controls input[type="range"] {
  width: 110px;
  height: 18px;
}
.demo-controls .readout {
  font: 500 0.7rem/1 var(--font-mono);
  color: var(--water-800);
  background: rgba(248, 250, 252, 0.9);
  border: 1px solid var(--chrome-300);
  border-radius: 3px;
  padding: 3px 6px;
  min-width: 58px;
  text-align: right;
}
.demo-status {
  position: absolute;
  top: 8px;
  left: 10px;
  font: 500 0.62rem/1.4 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite-500);
  z-index: 2;
  pointer-events: none;
}
.demo-fallback-img {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--chrome-100);
}
.demo-fallback-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.demo-fallback-img .fb-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  font: 500 0.6rem/1.4 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(248, 250, 252, 0.9);
  border: 1px solid var(--chrome-300);
  border-radius: var(--r-pill);
  padding: 2px 8px;
  color: var(--graphite-600);
}
.demo-load3d {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(232, 236, 240, 0.55);
  z-index: 3;
}
.demo-readout {
  position: absolute;
  right: 10px;
  top: 8px;
  font: 500 0.68rem/1.4 var(--font-mono);
  color: var(--water-900);
  background: rgba(248, 250, 252, 0.86);
  border: 1px solid var(--chrome-300);
  border-radius: var(--r-sm);
  padding: 3px 8px;
  z-index: 2;
  pointer-events: none;
}

/* 18b ------------------------------------------------ page-level modules */
.price {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--water-800);
}
mark {
  background: var(--water-200);
  color: var(--water-900);
  border-radius: 2px;
  padding: 0 2px;
}

/* FAQ */
.faq {
  display: grid;
  gap: 10px;
  max-width: 78ch;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  padding: 0 18px;
  box-shadow: var(--shadow-xs);
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 15px 26px 15px 0;
  position: relative;
  font: 700 0.96rem/1.45 var(--font-head);
  color: var(--ink);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font: 400 1.2rem/1 var(--font-mono);
  color: var(--water-600);
  transition: transform var(--t-color);
}
.faq-item[open] summary::after {
  content: "−";
}
.faq-item p {
  margin: 0 0 16px;
  font-size: 0.92rem;
  color: var(--ink-2);
  line-height: 1.65;
}

/* Diagnose blocks */
.type-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  padding: 26px 28px 28px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 22px;
  scroll-margin-top: 110px;
}
.type-head {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.type-head h2 {
  margin: 0;
}
.type-head .eyebrow {
  margin-bottom: 2px;
}
.type-badges {
  margin-left: auto;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.type-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  margin: 20px 0 8px;
}
.type-grid h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}
.type-grid ul,
.type-grid ol {
  margin: 0;
  padding-left: 1.15em;
  font-size: 0.92rem;
  color: var(--graphite-700);
}
.type-grid li {
  margin-bottom: 6px;
  line-height: 1.55;
}
.type-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

/* Fix steps */
.fix-list {
  margin-top: 30px;
}
.fix-step {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
  scroll-margin-top: 110px;
}
.fix-art {
  position: relative;
  background: var(--chrome-100);
  border-right: 1px solid var(--line);
  min-height: 220px;
}
.fix-art svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.fix-body {
  padding: 24px 26px;
}
.fix-body h2 {
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  margin-bottom: 8px;
}
.fix-body p {
  margin-bottom: 10px;
  color: var(--graphite-700);
  font-size: 0.95rem;
}
.fix-body .tip-box {
  margin: 12px 0 0;
}

/* Tools */
.tool-list {
  display: grid;
  gap: 18px;
}
.tool-block {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 26px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 110px;
}
.tool-art {
  background: var(--chrome-100);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.tool-art svg {
  width: 100%;
  height: auto;
  display: block;
}
.tool-block h2 {
  margin: 0;
  font-size: 1.35rem;
}
.tool-block p {
  font-size: 0.94rem;
  color: var(--graphite-700);
  margin: 10px 0;
}

/* Calculators */
.calc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}
.calc-form,
.calc-results {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}
.calc-results {
  position: sticky;
  top: 108px;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 18px 0;
}
.result {
  background: var(--chrome-100);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
}
.result > span {
  display: block;
  font: 700 0.64rem/1.4 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite-600);
}
.result b {
  display: block;
  font: 600 1.35rem/1.25 var(--font-mono);
  color: var(--graphite-900);
  margin: 2px 0;
}
.result b.small-b {
  font-size: 0.98rem;
  line-height: 1.4;
}
.result small {
  font-size: 0.72rem;
  color: var(--ink-3);
  line-height: 1.35;
  display: block;
}
.soak-figure {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 18px;
  background: var(--water-200);
  border: 1px solid var(--water-400);
  border-radius: var(--r-card);
  color: var(--water-900);
  margin-bottom: 16px;
}
.soak-figure b {
  font: 700 2.4rem/1 var(--font-mono);
}
.soak-figure span {
  font: 600 0.8rem/1 var(--font-body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.btn-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 30px;
  align-items: start;
}
.contact-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.contact-side {
  display: grid;
  gap: 14px;
}
.panel-light {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  padding: 18px;
}
.panel-light h3 {
  font-size: 0.98rem;
  margin-bottom: 8px;
}
.form-note {
  margin: 12px 0 0;
  font: 500 0.78rem/1.5 var(--font-mono);
  color: var(--water-800);
  min-height: 1.2em;
}

/* Parts table */
.parts-toolbar {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, minmax(0, 1fr)) auto;
  gap: 12px;
  align-items: end;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  padding: 16px;
  box-shadow: var(--shadow-xs);
}
.parts-count {
  font: 500 0.74rem/1.4 var(--font-mono);
  color: var(--ink-3);
  margin: 12px 0;
  letter-spacing: 0.04em;
}
.parts-table th[scope="col"] {
  padding: 0;
}
.th-sort {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  width: 100%;
  background: none;
  border: 0;
  color: inherit;
  font: inherit;
  padding: 12px 14px;
  cursor: pointer;
  text-align: left;
}
.th-sort svg {
  width: 11px;
  height: 11px;
  opacity: 0.7;
}
.th-sort:hover {
  background: rgba(255, 255, 255, 0.12);
}
.row-toggle {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--chrome-50);
  color: var(--water-800);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: transform var(--t-color), border-color var(--t-color);
}
.row-toggle svg {
  width: 12px;
  height: 12px;
}
.row-toggle:hover {
  border-color: var(--water-600);
}
.row-toggle.is-open {
  transform: rotate(45deg);
  border-color: var(--water-600);
  background: var(--water-200);
}
.part-detail td {
  background: rgba(208, 232, 240, 0.35) !important;
  padding: 0 !important;
}
.detail-inner {
  padding: 14px 18px 16px 52px;
  font-size: 0.88rem;
  color: var(--graphite-700);
}
.detail-inner p {
  margin: 0 0 10px;
  max-width: 80ch;
}

/* Search results */
.search-results {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}
.search-hit {
  display: block;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--water-600);
  border-radius: var(--r-card);
  text-decoration: none;
  color: var(--ink);
  transition: transform var(--t-card), box-shadow var(--t-card), border-color var(--t-card);
}
.search-hit:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--ink);
  border-color: var(--water-500);
}
.search-hit-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 4px;
}
.search-hit-url {
  font-size: 0.68rem;
  color: var(--ink-3);
  letter-spacing: 0.03em;
}
.search-hit h3 {
  font-size: 1.02rem;
  margin: 0 0 2px;
}
.search-hit p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--ink-2);
  line-height: 1.55;
}
.search-count {
  font: 500 0.74rem/1.4 var(--font-mono);
  color: var(--ink-3);
  margin: 18px 0 0;
  letter-spacing: 0.04em;
}

/* Simulator page extras */
.sim-disclaimer {
  font: 400 0.72rem/1.6 var(--font-mono);
  color: var(--graphite-400);
  margin: 16px 0 0;
  max-width: 90ch;
}
.sim-page-info {
  background: var(--graphite-900);
  color: var(--chrome-300);
  border-top: 1px solid var(--graphite-800);
}
.sim-page-info h3 {
  color: var(--chrome-50);
  font-size: 1rem;
}
.sim-page-info p {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--chrome-400);
  margin: 0;
}
.sim-page-info a {
  color: var(--water-300);
}
.sim-page .sim-top .eyebrow {
  margin-bottom: 4px;
}

/* 19 ---------------------------------------------------------- utilities */
.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;
}
.center {
  text-align: center;
}
.mt-0 {
  margin-top: 0;
}
.mt-1 {
  margin-top: 10px;
}
.mt-2 {
  margin-top: 22px;
}
.mt-3 {
  margin-top: 36px;
}
.mb-0 {
  margin-bottom: 0;
}
.flex {
  display: flex;
}
.flex-wrap {
  flex-wrap: wrap;
}
.gap-1 {
  gap: 8px;
}
.gap-2 {
  gap: 16px;
}
.between {
  justify-content: space-between;
}
.items-center {
  align-items: center;
}
.flow-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 34px 0 22px;
  color: var(--chrome-500);
}
.flow-divider::before,
.flow-divider::after {
  content: "";
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}
.flow-divider svg {
  width: 14px;
  height: 14px;
}
.prose-narrow {
  max-width: 72ch;
}
.kv {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 8px 16px;
  margin: 18px 0;
  font-size: 0.9rem;
}
.kv dt {
  font: 500 0.74rem/1.6 var(--font-mono);
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.kv dd {
  margin: 0;
  color: var(--graphite-700);
}
.list-check {
  list-style: none;
  padding: 0;
  margin: 0 0 1.2em;
  display: grid;
  gap: 8px;
}
.list-check li {
  position: relative;
  padding-left: 24px;
  font-size: 0.94rem;
  line-height: 1.6;
}
.list-check li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.5em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid var(--water-500);
}
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hose-fill::after,
  .btn-flow:hover .drop {
    animation: none;
  }
  * {
    scroll-behavior: auto;
  }
}

/* 20 ------------------------------------------------------- responsive */
@media (max-width: 1080px) {
  .grid-4,
  .trust-grid,
  .steps,
  .blog-list,
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .sim-shell {
    grid-template-columns: minmax(0, 1fr) 310px;
  }
  .article-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }
  .toc {
    position: static;
    order: -1;
  }
  .foot-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
  .foot-sub {
    grid-column: 1 / -1;
  }
  .fix-step {
    grid-template-columns: 260px minmax(0, 1fr);
  }
  .tool-block {
    grid-template-columns: 240px minmax(0, 1fr);
  }
  .parts-toolbar {
    grid-template-columns: 1fr 1fr 1fr;
  }
}
@media (max-width: 900px) {
  :root {
    --head-h: 84px;
  }
  .hosenav,
  .brand-tools .btn-xs {
    display: none;
  }
  .hamburger {
    display: grid;
  }
  .brandbar {
    height: 52px;
  }
  .brandbar-inner {
    height: 52px;
  }
  .brand-mark {
    width: 32px;
    height: 32px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    padding: 32px 0 36px;
  }
  .hero {
    min-height: 0;
  }
  .hero-art {
    order: -1;
    max-width: 460px;
    margin-inline: auto;
  }
  .sim-band-grid {
    grid-template-columns: 1fr;
  }
  .sim-shell {
    grid-template-columns: minmax(0, 1fr);
  }
  .sim-stage {
    min-height: 380px;
    aspect-ratio: 4 / 3;
  }
  .sim-panel {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
  .cta-band {
    grid-template-columns: 1fr;
    padding: 30px 26px;
  }
  .featured-post {
    grid-template-columns: 1fr;
  }
  .featured-post .fp-art {
    min-height: 220px;
  }
  .article-grid {
    padding-top: 28px;
  }
  .page-hero {
    padding: 26px 0 34px;
  }
  .fix-step {
    grid-template-columns: minmax(0, 1fr);
  }
  .fix-art {
    min-height: 190px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .tool-block {
    grid-template-columns: minmax(0, 1fr);
  }
  .calc-grid,
  .contact-grid,
  .type-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .calc-results {
    position: static;
  }
  .parts-toolbar {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 640px) {
  :root {
    --gutter: 16px;
  }
  body {
    font-size: 15.5px;
  }
  .section {
    padding: 40px 0;
  }
  .grid-2,
  .grid-3,
  .grid-4,
  .grid-auto,
  .trust-grid,
  .steps,
  .blog-list,
  .related-grid,
  .score-grid,
  .preset-grid {
    grid-template-columns: 1fr;
  }
  .trust-grid {
    gap: 16px;
  }
  .sim-panel {
    grid-template-columns: 1fr;
  }
  .hero {
    min-height: 440px;
    align-items: flex-start;
  }
  .hero-art {
    max-width: 320px;
  }
  .hero-cta .btn {
    width: 100%;
  }
  .table-wrap {
    border-radius: var(--r-card);
  }
  table.data {
    min-width: 640px;
  }
  .article {
    font-size: 1rem;
  }
  .article-grid {
    gap: 20px;
  }
  .demo-controls label span.lab-text {
    display: none;
  }
  .demo-controls input[type="range"] {
    width: 78px;
  }
  .cta-band {
    padding: 26px 20px;
  }
  .foot-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .foot-brand {
    grid-column: 1 / -1;
  }
  .foot-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .post-nav a {
    max-width: 100%;
  }
  .sim-stage {
    aspect-ratio: 1 / 1;
    min-height: 340px;
  }
  .sim-stage .stage-hint {
    right: 12px;
    max-width: none;
    font-size: 0.62rem;
    line-height: 1.5;
    padding: 6px 9px;
  }
  .kv {
    grid-template-columns: 1fr;
    gap: 2px;
  }
  .kv dd {
    margin-bottom: 8px;
  }
  .field-row,
  .result-grid,
  .parts-toolbar {
    grid-template-columns: minmax(0, 1fr);
  }
  .type-block,
  .fix-body,
  .calc-form,
  .calc-results,
  .contact-form {
    padding: 18px;
  }
}
@media print {
  .site-head,
  .site-foot,
  .toc,
  .demo-controls,
  .preview-toolbar,
  .sim-panel {
    display: none !important;
  }
  body {
    background: #fff;
  }
}