/* ================================================================
   RHEIN INDUSTRIES · shared styles
   ================================================================ */
:root {
 --black: #0d0d0d;
 --ink: #161616;
 --grey: #555;
 --line: #0d0d0d;
 --hair: #d8d8d8;
 --white: #ffffff;
 --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
 --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
 --sans: "Inter", "Helvetica Neue", Arial, sans-serif;
}
* {
 margin: 0;
 padding: 0;
 box-sizing: border-box;
}
html {
 scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
 html {
  scroll-behavior: auto;
 }
 *,
 *::before,
 *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
 }
}
body {
 font-family: var(--sans);
 color: var(--ink);
 background: var(--white);
 line-height: 1.65;
 font-size: 16px;
}
::selection {
 background: var(--black);
 color: var(--white);
}

/* Keyboard focus. currentColor keeps the ring visible on the black hero
   and on the light sections without a second set of rules. */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
 outline: 2px solid currentColor;
 outline-offset: 3px;
}
.lang-switch a:focus-visible {
 outline-offset: -3px;
}

/* Available to screen readers and search engines, invisible on screen.
   Used for the hero's real headline, which the dictionary conceit replaces
   visually. */
.sr-only {
 position: absolute;
 width: 1px;
 height: 1px;
 padding: 0;
 margin: -1px;
 overflow: hidden;
 clip-path: inset(50%);
 white-space: nowrap;
 border: 0;
}

.skip-link {
 position: absolute;
 left: 24px;
 top: -120px;
 z-index: 100;
 background: var(--black);
 color: var(--white);
 padding: 12px 20px;
 font-family: var(--mono);
 font-size: 0.78rem;
 letter-spacing: 0.1em;
 text-transform: uppercase;
 text-decoration: none;
 transition: top 0.12s ease-out;
}
.skip-link:focus {
 top: 12px;
}
.container {
 max-width: 1060px;
 margin: 0 auto;
 padding: 0 24px;
}
.mono {
 font-family: var(--mono);
}
.pname {
 font-family: var(--mono);
 font-weight: 500;
 letter-spacing: 0.01em;
}

/* ---------- header ---------- */
header {
 position: sticky;
 top: 0;
 z-index: 50;
 background: rgba(255, 255, 255, 0.94);
 backdrop-filter: blur(6px);
 border-bottom: 1px solid var(--black);
}
.nav {
 display: flex;
 align-items: center;
 justify-content: space-between;
 height: 66px;
}
.logo {
 display: flex;
 align-items: center;
 gap: 12px;
 text-decoration: none;
 color: var(--black);
}
.logo-mark {
 width: 34px;
 height: 34px;
 flex: none;
}
.logo-name {
 font-family: var(--serif);
 font-weight: 600;
 font-size: 1.45rem;
 letter-spacing: 0.01em;
}
.nav nav > ul {
 display: flex;
 gap: 28px;
 list-style: none;
 align-items: center;
}
.nav nav a {
 color: var(--ink);
 text-decoration: none;
 font-family: var(--mono);
 font-size: 0.78rem;
 letter-spacing: 0.08em;
 text-transform: uppercase;
}
.nav nav a:hover,
.nav nav a.active {
 text-decoration: underline;
 text-underline-offset: 4px;
}
.lang-switch {
 display: flex;
 border: 1px solid var(--black);
 overflow: hidden;
 font-family: var(--mono);
 font-size: 0.72rem;
}
.lang-switch a {
 display: block;
 background: transparent;
 padding: 5px 11px;
 color: var(--grey);
 font-family: inherit;
 letter-spacing: 0.08em;
 text-decoration: none;
}
.lang-switch a[aria-current="page"] {
 background: var(--black);
 color: var(--white);
}
.menu-toggle {
 display: none;
 background: none;
 border: 1px solid var(--black);
 padding: 5px 11px;
 cursor: pointer;
 font-family: var(--mono);
 color: var(--black);
 font-size: 1.25rem;
 line-height: 1;
}

/* ---------- hero (home) ---------- */
.hero {
 position: relative;
 border-bottom: 1px solid var(--black);
 overflow: hidden;
 /* Stands in when WebGL is unavailable or the shader fails to compile. */
 background:
  radial-gradient(115% 115% at 76% 42%, #262626 0%, #101010 55%, #060606 100%),
  var(--black);
}
#shader {
 position: absolute;
 inset: 0;
 width: 100%;
 height: 100%;
 display: block;
}
.hero-scrim {
 position: absolute;
 inset: 0;
 background: linear-gradient(
  100deg,
  rgba(0, 0, 0, 0.82) 0%,
  rgba(0, 0, 0, 0.6) 45%,
  rgba(0, 0, 0, 0.15) 80%
 );
 z-index: 1;
}
.hero-inner {
 position: relative;
 z-index: 2;
 padding: 150px 24px;
 color: var(--white);
}
.kicker {
 font-family: var(--mono);
 font-size: 0.72rem;
 letter-spacing: 0.3em;
 text-transform: uppercase;
 margin-bottom: 26px;
 opacity: 0.85;
}
h1 {
 font-family: var(--serif);
 font-weight: 500;
 font-size: clamp(2.6rem, 6.4vw, 4.6rem);
 line-height: 1.06;
 letter-spacing: 0.005em;
 max-width: 820px;
}
.dict {
 max-width: 640px;
 margin-bottom: 40px;
 text-shadow:
  0 1px 14px rgba(0, 0, 0, 0.9),
  0 0 3px rgba(0, 0, 0, 0.8);
}
.dict-entry {
 margin-bottom: 26px;
}
.dict-word {
 font-family: var(--serif);
 font-weight: 500;
 font-size: clamp(1.7rem, 3.4vw, 2.4rem);
 line-height: 1.1;
 letter-spacing: 0.005em;
}
.dict-ipa {
 font-family: var(--mono);
 font-size: 0.42em;
 font-weight: 400;
 opacity: 0.78;
 letter-spacing: 0.02em;
 vertical-align: middle;
 margin-left: 6px;
}
.dict-pos {
 font-family: var(--serif);
 font-style: italic;
 font-weight: 400;
 opacity: 0.82;
}
.dict-gram {
 font-size: 0.98rem;
 margin-top: 4px;
}
.dict-def {
 margin-top: 8px;
 font-size: 0.94rem;
 opacity: 0.92;
 max-width: 560px;
}
.dict-together {
 border-top: 1px solid rgba(255, 255, 255, 0.35);
 padding-top: 26px;
 margin-bottom: 0;
}
.dict-together .dict-def {
 font-family: var(--serif);
 font-size: 1.12rem;
 line-height: 1.55;
 max-width: 580px;
}
.dict-sym {
 opacity: 0.6;
 margin-right: 8px;
 font-family: var(--serif);
 font-style: normal;
}
.btn {
 display: inline-block;
 padding: 14px 30px;
 text-decoration: none;
 font-family: var(--mono);
 font-size: 0.8rem;
 letter-spacing: 0.12em;
 text-transform: uppercase;
 border: 1px solid var(--white);
}
.btn-solid {
 background: var(--white);
 color: var(--black);
}
.btn-solid:hover {
 background: transparent;
 color: var(--white);
}
.btn-out {
 color: var(--white);
 margin-left: 14px;
}
.btn-out:hover {
 background: var(--white);
 color: var(--black);
}
/* ---------- sections ---------- */
section {
 padding: 92px 0;
 border-top: 1px solid var(--black);
}
section:first-of-type {
 border-top: 0;
}
.sec-head {
 margin-bottom: 54px;
}
.sec-head .kicker {
 color: var(--grey);
 margin-bottom: 14px;
}
h2 {
 font-family: var(--serif);
 font-weight: 500;
 font-size: clamp(1.9rem, 3.6vw, 2.7rem);
 line-height: 1.12;
 letter-spacing: 0.005em;
}
.sec-head p {
 color: var(--grey);
 max-width: 620px;
 margin-top: 16px;
}
.page-title {
 font-size: clamp(2.2rem, 5vw, 3.6rem);
}
.more {
 font-family: var(--mono);
 font-size: 0.78rem;
 letter-spacing: 0.1em;
 text-transform: uppercase;
 text-decoration: none;
 color: var(--ink);
}
.more:hover {
 text-decoration: underline;
 text-underline-offset: 4px;
}
.aside-note {
 font-family: var(--serif);
 font-style: italic;
 font-size: 1.15rem;
 color: var(--grey);
 margin-top: 26px;
}
.statement {
 font-family: var(--serif);
 font-size: clamp(1.25rem, 2.2vw, 1.5rem);
 line-height: 1.45;
 max-width: 720px;
 margin-top: 40px;
}
.fam {
 font-family: var(--mono);
 font-size: 0.7rem;
 letter-spacing: 0.2em;
 text-transform: uppercase;
 color: var(--grey);
 margin: 52px 0 12px;
}
.fam:first-of-type {
 margin-top: 0;
}

/* ---------- ledger (services & products) ---------- */
.svc-list {
 border-top: 1px solid var(--black);
}
.svc {
 display: grid;
 grid-template-columns: 90px 1fr 1.2fr;
 gap: 28px;
 padding: 34px 0;
 border-bottom: 1px solid var(--black);
}
.svc .idx {
 font-family: var(--mono);
 font-size: 0.78rem;
 letter-spacing: 0.1em;
 color: var(--grey);
 padding-top: 6px;
}
.svc h3 {
 font-family: var(--serif);
 font-weight: 600;
 font-size: 1.55rem;
 line-height: 1.2;
}
.svc h3 em {
 font-style: italic;
 font-weight: 400;
 font-size: 1rem;
 color: var(--grey);
 display: block;
 margin-top: 4px;
}
.svc h3.pname {
 font-family: var(--mono);
 font-weight: 500;
 font-size: 1.3rem;
}
.svc .tagline {
 font-family: var(--serif);
 font-style: italic;
 font-size: 1.1rem;
 color: var(--grey);
 margin-top: 6px;
 line-height: 1.3;
}
.svc p {
 color: var(--ink);
 font-size: 0.95rem;
}
.svc ul {
 list-style: none;
 margin-top: 14px;
}
.svc li {
 font-family: var(--mono);
 font-size: 0.78rem;
 color: var(--grey);
 padding: 2px 0;
 letter-spacing: 0.03em;
}
.svc li::before {
 content: "— ";
}
.svc .more {
 display: inline-block;
 margin-top: 16px;
}
.spec {
 font-family: var(--mono);
 font-size: 0.7rem;
 letter-spacing: 0.12em;
 text-transform: uppercase;
 color: var(--grey);
 margin-top: 16px;
}

/* index rows for products and services */
.entry-index {
 border-top: 1px solid var(--black);
 list-style: none;
}
.entry-index a {
 display: grid;
 grid-template-columns: 90px 1fr auto;
 gap: 28px;
 padding: 22px 0;
 border-bottom: 1px solid var(--black);
 text-decoration: none;
 color: var(--ink);
 align-items: baseline;
}
.entry-index .idx {
 font-family: var(--mono);
 font-size: 0.78rem;
 letter-spacing: 0.1em;
 color: var(--grey);
}
.entry-index .t {
 font-family: var(--serif);
 font-weight: 600;
 font-size: 1.35rem;
 line-height: 1.2;
}
.entry-index .t em {
 font-style: italic;
 font-weight: 400;
 font-size: 0.95rem;
 color: var(--grey);
 margin-left: 8px;
}
.entry-index .t .pname {
 font-size: 1.15rem;
}
.entry-index .arrow {
 font-family: var(--mono);
 color: var(--grey);
}
.entry-index a:hover .t {
 text-decoration: underline;
 text-underline-offset: 4px;
}
/* ---------- ruled cells (approach steps, rules) ---------- */
.steps {
 display: grid;
 grid-template-columns: repeat(4, 1fr);
 border: 1px solid var(--black);
}
.steps.rules {
 grid-template-columns: repeat(3, 1fr);
}
.step {
 padding: 30px 24px 34px;
 border-left: 1px solid var(--black);
}
.step:first-child {
 border-left: 0;
}
.step .roman {
 font-family: var(--serif);
 font-size: 2.6rem;
 font-weight: 400;
 line-height: 1;
 font-style: italic;
}
.step h3 {
 font-family: var(--mono);
 font-size: 0.78rem;
 letter-spacing: 0.16em;
 text-transform: uppercase;
 margin: 16px 0 10px;
}
.step p {
 font-size: 0.87rem;
 color: var(--grey);
}

/* ---------- about ---------- */
.about-grid {
 display: grid;
 grid-template-columns: 1.15fr 0.85fr;
 gap: 56px;
 align-items: start;
}
.about-grid .prose p {
 margin-bottom: 16px;
}
.about-grid .prose p:first-child::first-letter {
 font-family: var(--serif);
 font-size: 3.4em;
 float: left;
 line-height: 0.82;
 padding-right: 10px;
 padding-top: 5px;
 font-weight: 500;
}
.values {
 border-top: 1px solid var(--black);
 list-style: none;
}
.values li {
 padding: 18px 0;
 border-bottom: 1px solid var(--black);
}
.values b {
 font-family: var(--serif);
 display: block;
 font-size: 1.25rem;
 font-weight: 600;
}
.values span {
 font-size: 0.88rem;
 color: var(--grey);
}

/* ---------- team ---------- */
.team {
 display: grid;
 grid-template-columns: repeat(3, 1fr);
 border: 1px solid var(--black);
}
.member {
 padding: 30px 24px 34px;
 border-left: 1px solid var(--black);
}
.member:first-child {
 border-left: 0;
}
.member .idx {
 font-family: var(--mono);
 font-size: 0.78rem;
 letter-spacing: 0.1em;
 color: var(--grey);
}
.member h3 {
 font-family: var(--serif);
 font-weight: 600;
 font-size: 1.55rem;
 line-height: 1.2;
 margin: 14px 0 8px;
}
.member .role {
 font-family: var(--mono);
 font-size: 0.72rem;
 letter-spacing: 0.14em;
 text-transform: uppercase;
 color: var(--grey);
}
.member .focus {
 font-size: 0.88rem;
 color: var(--grey);
 margin-top: 10px;
}

/* ---------- contact ---------- */
.contact-grid {
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: 56px;
}
.contact-info p {
 margin-bottom: 6px;
 color: var(--ink);
}
.contact-info .big {
 font-family: var(--serif);
 font-size: 1.5rem;
 font-weight: 600;
}
.contact-info a {
 color: var(--ink);
}
form .row {
 margin-bottom: 18px;
}
label {
 display: block;
 font-family: var(--mono);
 font-size: 0.7rem;
 letter-spacing: 0.14em;
 text-transform: uppercase;
 margin-bottom: 7px;
 color: var(--grey);
}
input,
textarea {
 width: 100%;
 padding: 12px;
 border: 1px solid var(--black);
 font: inherit;
 font-size: 0.94rem;
 background: var(--white);
 border-radius: 0;
}
input:focus,
textarea:focus {
 outline: 2px solid var(--black);
 outline-offset: -1px;
}
.btn-black {
 background: var(--black);
 color: var(--white);
 border: 1px solid var(--black);
 cursor: pointer;
}
.btn-black:hover {
 background: var(--white);
 color: var(--black);
}

/* cta band */
.cta-wrap {
 display: flex;
 justify-content: space-between;
 align-items: center;
 gap: 24px;
 flex-wrap: wrap;
}

/* ---------- form status ---------- */
.form-status {
 margin-top: 14px;
 font-family: var(--mono);
 font-size: 0.74rem;
 letter-spacing: 0.05em;
 line-height: 1.55;
 max-width: 46ch;
}
.form-status:empty {
 display: none;
}
.form-status::before {
 content: "— ";
}
.form-status[data-state="busy"] {
 opacity: 0.7;
}
.form-status[data-state="error"] {
 text-decoration: underline;
 text-underline-offset: 4px;
}

/* ---------- legal pages ---------- */
.legal {
 max-width: 720px;
}
.legal h2 {
 font-size: 1.4rem;
 margin-top: 42px;
}
.legal h2:first-of-type {
 margin-top: 0;
}
.legal p {
 margin-top: 12px;
 font-size: 0.95rem;
}
.legal .updated {
 font-family: var(--mono);
 font-size: 0.7rem;
 letter-spacing: 0.14em;
 text-transform: uppercase;
 color: var(--grey);
 margin-top: 18px;
}
.factsheet {
 font-family: var(--mono);
 font-size: 0.8rem;
 border-top: 1px solid var(--black);
 margin-top: 20px;
}
.factsheet div {
 display: grid;
 grid-template-columns: 210px 1fr;
 gap: 16px;
 padding: 11px 0;
 border-bottom: 1px solid var(--hair);
}
.factsheet dt {
 color: var(--grey);
 text-transform: uppercase;
 letter-spacing: 0.12em;
 font-size: 0.68rem;
 padding-top: 3px;
}
.factsheet a {
 color: var(--ink);
}

/* ---------- footer ---------- */
footer {
 border-top: 1px solid var(--black);
 padding: 26px 0;
 font-family: var(--mono);
 font-size: 0.74rem;
 color: var(--grey);
 letter-spacing: 0.05em;
}
footer .container {
 display: flex;
 justify-content: space-between;
 align-items: baseline;
 flex-wrap: wrap;
 gap: 10px 28px;
}
footer a {
 color: var(--grey);
 text-decoration: none;
}
footer a:hover {
 color: var(--ink);
 text-decoration: underline;
 text-underline-offset: 4px;
}
.ft-links {
 display: flex;
 gap: 22px;
 list-style: none;
}

/* ---------- responsive ---------- */
@media (max-width: 840px) {
 .hero-inner {
  padding: 90px 24px;
 }
 .nav nav > ul {
  display: none;
  position: absolute;
  top: 66px;
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--black);
  flex-direction: column;
  padding: 18px 24px;
  gap: 16px;
  align-items: flex-start;
 }
 .nav nav > ul.open {
  display: flex;
 }
 .menu-toggle {
  display: block;
 }
 .svc {
  grid-template-columns: 1fr;
  gap: 10px;
 }
 .entry-index a {
  grid-template-columns: 1fr auto;
 }
 .entry-index .idx {
  display: none;
 }
 .steps {
  grid-template-columns: 1fr 1fr;
 }
 .step:nth-child(3) {
  border-left: 0;
 }
 .step:nth-child(n + 3) {
  border-top: 1px solid var(--black);
 }
 .steps.rules {
  grid-template-columns: 1fr;
 }
 .steps.rules .step {
  border-left: 0;
 }
 .steps.rules .step + .step {
  border-top: 1px solid var(--black);
 }
 .about-grid,
 .contact-grid {
  grid-template-columns: 1fr;
 }
 .team {
  grid-template-columns: 1fr;
 }
 .member {
  border-left: 0;
 }
 .member + .member {
  border-top: 1px solid var(--black);
 }
 .factsheet div {
  grid-template-columns: 1fr;
  gap: 4px;
 }
}

/* ---------- product detail plates ---------- */
.plate {
 background: var(--black);
 color: #fff;
 border: 1px solid var(--black);
}
.plate-head {
 padding: 44px 40px 30px;
 border-bottom: 1px solid rgba(255, 255, 255, 0.35);
}
.plate-idx {
 font-family: var(--mono);
 font-size: 0.7rem;
 letter-spacing: 0.2em;
 text-transform: uppercase;
 opacity: 0.78;
 margin-bottom: 18px;
}
.plate-name {
 font-family: var(--mono);
 font-weight: 500;
 font-size: clamp(2.2rem, 5vw, 3.6rem);
 line-height: 1;
 letter-spacing: -0.01em;
}
.plate-tag {
 font-family: var(--serif);
 font-style: italic;
 font-size: clamp(1.2rem, 2.4vw, 1.6rem);
 opacity: 0.85;
 margin-top: 12px;
}
.plate-body {
 display: grid;
 grid-template-columns: 1.1fr 0.9fr;
 gap: 40px;
 padding: 34px 40px;
}
.plate-prose p {
 font-size: 0.95rem;
 opacity: 0.88;
 margin-bottom: 14px;
 max-width: 520px;
}
.plate-figure {
 border: 1px solid rgba(255, 255, 255, 0.35);
 min-height: 220px;
 display: flex;
 align-items: flex-end;
 padding: 14px;
 margin-bottom: 22px;
 font-family: var(--mono);
 font-size: 0.66rem;
 letter-spacing: 0.14em;
 text-transform: uppercase;
 opacity: 0.72;
}
.datasheet {
 font-family: var(--mono);
 font-size: 0.76rem;
 letter-spacing: 0.04em;
 border-top: 1px solid rgba(255, 255, 255, 0.35);
}
.datasheet div {
 display: grid;
 grid-template-columns: 120px 1fr;
 gap: 16px;
 padding: 9px 0;
 border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}
.datasheet dt {
 opacity: 0.75;
 text-transform: uppercase;
 letter-spacing: 0.14em;
 font-size: 0.66rem;
 padding-top: 2px;
}
.datasheet dd {
 opacity: 0.95;
}
.tba {
 opacity: 0.72;
}
.plate-facts {
 display: flex;
 border-top: 1px solid rgba(255, 255, 255, 0.35);
 font-family: var(--mono);
}
.plate-facts div {
 flex: 1;
 padding: 16px 40px;
 font-size: 0.72rem;
 letter-spacing: 0.1em;
 text-transform: uppercase;
 opacity: 0.8;
}
.plate-facts div + div {
 border-left: 1px solid rgba(255, 255, 255, 0.35);
}
.plate + .fam {
 margin-top: 44px;
}
.product-intro-head {
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 36px;
}
.product-intro-head .sec-head {
 margin-bottom: 54px;
}
.product-mark {
 width: 176px;
 height: auto;
 flex: none;
 margin-bottom: 54px;
}
.product-actions {
 display: flex;
 flex-wrap: wrap;
 gap: 12px;
 margin-top: 26px;
}
.product-actions .btn {
 padding: 12px 18px;
 font-size: 0.72rem;
}
.product-actions .btn-out {
 margin-left: 0;
}
.beta-panel {
 border: 1px solid var(--black);
 padding: 44px 40px;
}
.beta-panel .kicker {
 color: var(--grey);
 margin-bottom: 14px;
}
.beta-panel p {
 color: var(--grey);
 max-width: 740px;
 margin-top: 16px;
}
.beta-panel .more {
 display: inline-block;
 margin-top: 24px;
}
@media (max-width: 840px) {
 .product-mark {
  width: 116px;
 }
 .beta-panel {
  padding: 30px 24px;
 }
 .plate-head,
 .plate-body {
  padding: 30px 24px;
 }
 .plate-body {
  grid-template-columns: 1fr;
  gap: 26px;
 }
 .plate-facts {
  flex-direction: column;
 }
 .plate-facts div {
  padding: 14px 24px;
 }
 .plate-facts div + div {
  border-left: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.35);
 }
 .datasheet div {
  grid-template-columns: 100px 1fr;
 }
}
@media (max-width: 560px) {
 .product-intro-head {
  flex-direction: column-reverse;
  align-items: flex-start;
  gap: 0;
 }
 .product-mark {
  width: 100px;
  margin-bottom: 20px;
 }
 .product-intro-head .sec-head {
  margin-bottom: 36px;
 }
 .steps {
  grid-template-columns: 1fr;
 }
 .step {
  border-left: 0;
 }
 .step + .step {
  border-top: 1px solid var(--black);
 }
 .product-actions .btn {
  width: 100%;
  text-align: center;
 }
 .hero-inner .btn {
  display: table;
  margin-left: 0;
  margin-top: 12px;
 }
}