/* PROMECH — engineering catalogue
   Machine green + graphite + the trademark red on the action. Mono carries every measured value. */

:root {
  --ink: #14181a;
  --ink-2: #1f2629;
  --ink-3: #2d383c;
  --paper: #f3f4f2;
  --paper-2: #e7eae6;
  --card: #ffffff;
  --text: #191f22;
  --muted: #5a666b;
  --line: #d6dbd6;
  --line-soft: #e5e9e5;
  --green-raw: #127a45;
  --green-deep-raw: #0d5c36;
  --brand: var(--green-raw);
  --brand-deep: var(--green-deep-raw);
  --brand-bright: #31b06c;
  --cta: #16140f;
  --cta-deep: #000000;
  --steel: #45616b;
  --green: var(--green-raw);
  --warn: #8a5c12;

  --mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Archivo", "IBM Plex Sans", system-ui, sans-serif;

  --wrap: 1200px;
  --wrap-wide: 1360px;
  --gut: clamp(1.15rem, 4vw, 2.75rem);
  --r: 3px;
  --shadow: 0 1px 0 rgba(26, 34, 42, 0.06), 0 12px 30px -18px rgba(26, 34, 42, 0.35);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font: 400 17px/1.62 var(--sans);
  font-feature-settings: "kern" 1;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--brand-deep); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gut); }
.wrap--tight { max-width: 880px; }
/* card grids and wide tables can use more rail than prose without hurting the measure,
   because .section-head and .lede keep their own character caps inside */
.wrap--wide { max-width: var(--wrap-wide); }

/* ---------- type ---------- */
h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.025em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.35rem, 6.4vw, 4.15rem); }
h2 { font-size: clamp(1.75rem, 3.7vw, 2.6rem); letter-spacing: -0.02em; }
h3 { font-size: clamp(1.16rem, 2vw, 1.42rem); letter-spacing: -0.012em; font-weight: 700; }
h4 { font-size: 1.02rem; font-weight: 700; letter-spacing: 0; }

/* CJK display type: full-width glyphs need their own scale, tracking and leading.
   Latin settings (negative tracking, 1.03 leading) collide and overflow here. */
[lang^="zh"] h1, [lang^="zh"] h2, [lang^="zh"] h3, [lang^="zh"] h4 {
  letter-spacing: 0;
  line-height: 1.24;
}
[lang^="zh"] h1 { font-size: clamp(1.9rem, 4.4vw, 3rem); }
[lang^="zh"] h2 { font-size: clamp(1.45rem, 2.8vw, 2rem); }
[lang^="zh"] h3 { font-size: clamp(1.1rem, 1.8vw, 1.3rem); }
[lang^="zh"] p, [lang^="zh"] .lede { line-height: 1.8; }
[lang^="zh"] .hero h1 u { white-space: nowrap; }
[lang^="zh"] .page-head h1 { font-size: clamp(1.6rem, 3.6vw, 2.4rem); line-height: 1.24; }
p { margin: 0 0 1.05em; }
p:last-child { margin-bottom: 0; }

/* the sticky-nav pages carry wide tables; let them use the full rail but keep
   running text at a measure a person can actually track on the next line */
.split--nav p:not(.lede), .split--nav li, .split--nav dd { max-width: 74ch; }

.lede { font-size: clamp(1.06rem, 1.7vw, 1.24rem); line-height: 1.55; color: #333d47; max-width: 62ch; }
.small { font-size: 0.9rem; }
.dim { color: var(--muted); }
strong { font-weight: 600; }
em { font-style: normal; background: linear-gradient(transparent 62%, rgba(18, 122, 69, 0.35) 0); }

.eyebrow {
  font: 500 0.72rem/1.3 var(--mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--brand-deep);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.1rem;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--brand); flex: none; }
.eyebrow--plain::before { display: none; }

.mono { font-family: var(--mono); font-size: 0.86em; letter-spacing: -0.01em; }

/* ---------- sections ---------- */
section { padding-block: clamp(3.2rem, 7vw, 6rem); }
.section-head { max-width: 68ch; margin-bottom: clamp(1.8rem, 3.5vw, 3rem); }
.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* three band surfaces share one markup; the green tokens flip so that checkmarks,
   eyebrows and tick marks stay legible on the ink one */
.band {
  background: var(--ink); color: #e7e3dc;
  --band-head: #fff; --band-body: #b9c0c7;
  --band-veil: rgba(255, 255, 255, 0.05); --band-line: rgba(255, 255, 255, 0.18);
  --band-surface: var(--ink-2);
  --brand: var(--brand-bright); --brand-deep: var(--brand-bright);
}
.band h1, .band h2, .band h3, .band h4 { color: var(--band-head); }
.band .lede, .band p { color: var(--band-body); }
.band--soft {
  background: #f7f8f7; color: var(--text);
  --band-head: var(--ink); --band-body: var(--muted);
  --band-veil: rgba(20, 24, 26, 0.04); --band-line: var(--line);
  --band-surface: var(--card);
  --brand: var(--green-raw); --brand-deep: var(--green-deep-raw);
}
.band--card {
  background: var(--card); border-block: 1px solid var(--line); color: var(--text);
  --band-head: var(--ink); --band-body: var(--muted);
  --band-veil: rgba(20, 24, 26, 0.03); --band-line: var(--line);
  --band-surface: var(--paper);
  --brand: var(--green-raw); --brand-deep: var(--green-deep-raw);
}

.num-tag {
  font: 500 0.7rem/1 var(--mono);
  letter-spacing: 0.1em;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 0.32rem 0.45rem;
  border-radius: var(--r);
  background: var(--card);
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.98);
  color: var(--text);
  border-bottom: 2px solid var(--brand);
  box-shadow: 0 1px 0 rgba(20, 24, 26, 0.06);
}
.topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  font: 500 0.7rem/1.5 var(--mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  padding-block: 0.42rem;
  border-bottom: 1px solid var(--line-soft);
  background: var(--paper);
}
.topbar span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar a { color: var(--muted); text-decoration: none; }
.topbar a:hover { color: var(--brand-deep); }
.masthead { display: flex; align-items: center; gap: clamp(0.7rem, 2.4vw, 2.2rem); padding-block: 0.85rem; min-height: 64px; }
.masthead > .nav { flex: 1; min-width: 0; }
.logo { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; flex: none; min-width: 0; }
.logo img { height: clamp(23px, 5.6vw, 40px); width: auto; max-width: 54vw; }

.nav { display: none; }
.nav ul { display: flex; gap: clamp(0.6rem, 1.6vw, 1.5rem); list-style: none; margin: 0; padding: 0; }
.nav a {
  text-decoration: none;
  color: #33403f;
  font: 500 0.83rem/1 var(--sans);
  letter-spacing: 0.01em;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.nav a:hover { color: var(--brand-deep); border-bottom-color: var(--brand); }
.nav a[aria-current="page"] { color: var(--brand-deep); border-bottom-color: var(--brand); font-weight: 600; }
@media (min-width: 1040px) { .nav { display: block; } }

.header-cta { display: none; }
@media (min-width: 1040px) { .header-cta { display: inline-flex; } }

.burger {
  display: inline-flex; flex-direction: column; gap: 4px;
  background: none; border: 1px solid var(--line); border-radius: var(--r);
  padding: 0.62rem 0.6rem; cursor: pointer;
}
.burger span { width: 20px; height: 2px; background: var(--ink); display: block; }
@media (min-width: 1040px) { .burger { display: none; } }

.drawer { display: none; border-top: 1px solid var(--line-soft); padding-bottom: 1.1rem; }
.drawer[data-open="true"] { display: block; }
.drawer ul { list-style: none; margin: 0; padding: 0; }
.drawer li { border-bottom: 1px solid var(--line-soft); }
.drawer a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.95rem 0.25rem; text-decoration: none; color: var(--text);
  font: 600 1rem/1 var(--sans);
}
.drawer a i { font-style: normal; font: 500 0.68rem/1 var(--mono); color: var(--muted); }
.drawer .btn { margin-top: 1.1rem; width: 100%; justify-content: center; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font: 600 0.94rem/1 var(--sans);
  text-decoration: none; border-radius: var(--r);
  padding: 0.86rem 1.15rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.16s, border-color 0.16s, color 0.16s;
}
.btn--primary { background: var(--cta); color: #fff; }
.btn--primary:hover { background: var(--cta-deep); }
.btn--dark { background: var(--ink-3); color: #fff; }
.btn--dark:hover { background: var(--ink); }
.btn--ghost { border-color: var(--line); background: transparent; color: var(--text); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--onink { border-color: rgba(255, 255, 255, 0.3); color: #fff; background: transparent; }
.btn--onink:hover { border-color: currentColor; background: rgba(20, 24, 26, 0.06); }
.btn--wa { background: #0f6f3b; color: #fff; }
.btn--wa:hover { background: #0c5a30; }
.btn--sm { padding: 0.6rem 0.8rem; font-size: 0.84rem; }

/* ---------- hero ---------- */
.hero { padding: 0; position: relative; background: var(--paper); color: var(--text); overflow: hidden; }
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.6;
  background-image: linear-gradient(rgba(18, 122, 69, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 122, 69, 0.09) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(120% 90% at 85% 0%, #000 20%, transparent 72%);
}
.hero-grid { position: relative; z-index: 1; display: grid; gap: clamp(1.6rem, 4vw, 3.2rem); padding-block: clamp(2.6rem, 6vw, 4.6rem) 0; }
@media (min-width: 980px) { .hero-grid { grid-template-columns: 1.05fr 1fr; align-items: center; } }
.hero h1 { color: var(--ink); margin-bottom: 0.35em; }
.hero h1 u { text-decoration: none; color: var(--brand-deep); }
.hero .lede { color: #3b474b; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.7rem; }
.hero-figure { position: relative; margin: 0; }
.hero-figure img { width: 100%; border: 1px solid var(--line); border-radius: var(--r); }
.hero-figure figcaption {
  position: static; margin-top: 0.7rem; padding: 0; max-width: none;
  font: 400 0.8rem/1.5 var(--sans); letter-spacing: 0; text-transform: none;
  color: var(--muted);
}

.statbar {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  margin-top: clamp(2rem, 5vw, 3.4rem);
}
@media (min-width: 800px) { .statbar { grid-template-columns: repeat(4, 1fr); } }
.statbar div { padding: 1.15rem 0.25rem 1.25rem; border-right: 1px solid var(--line); }
.statbar div:last-child { border-right: 0; }
@media (max-width: 799px) {
  .statbar div:nth-child(2n) { border-right: 0; }
  .statbar div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
.statbar b { display: block; font: 800 clamp(1.5rem, 3vw, 2.15rem)/1 var(--display); letter-spacing: -0.03em; color: var(--ink); }
.statbar span { display: block; font: 500 0.68rem/1.45 var(--mono); letter-spacing: 0.09em; text-transform: uppercase; color: var(--muted); margin-top: 0.45rem; }

/* ---------- grids & cards ---------- */
.grid { display: grid; gap: clamp(1rem, 2vw, 1.5rem); }
@media (min-width: 640px) { .grid--2 { grid-template-columns: repeat(2, 1fr); } .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .grid--3 { grid-template-columns: repeat(3, 1fr); } .grid--4 { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 640px) and (max-width: 979px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r); padding: clamp(1.15rem, 2.2vw, 1.7rem);
  box-shadow: var(--shadow);
  display: flex; flex-direction: column;
}
.card > h3, .card > h4 { margin-bottom: 0.4em; }
.card p { font-size: 0.98rem; color: #3b454f; }
.card--ink { background: var(--ink-2); border-color: var(--ink-3); color: #d5dbe1; }
.card--ink h3, .card--ink h4 { color: #fff; }
.card--ink p { color: #a9b3bc; }
.card__idx { font: 600 0.7rem/1.2 var(--sans); letter-spacing: 0.02em; color: var(--brand-deep); margin-bottom: 0.7rem; }
.card__list { list-style: none; margin: 0.6rem 0 0; padding: 0; font-size: 0.95rem; }
.card__list li { padding: 0.42rem 0 0.42rem 1.15rem; position: relative; border-top: 1px solid var(--line-soft); }
.card__list li::before { content: "→"; position: absolute; left: 0; color: var(--brand-deep); font-family: var(--mono); font-size: 0.85rem; }
.card--ink .card__list li { border-top-color: rgba(255, 255, 255, 0.09); }

/* product cards */
.prod {
  display: grid; grid-template-columns: 1fr; gap: 0;
  border: 1px solid var(--line); background: var(--card); border-radius: var(--r);
  overflow: hidden; box-shadow: var(--shadow); height: 100%;
}
.prod img { width: 100%; }
.prod__body { padding: clamp(1.15rem, 2.2vw, 1.6rem); display: flex; flex-direction: column; flex: 1; }
.prod__meta { font: 500 0.72rem/1.5 var(--mono); letter-spacing: 0.05em; color: var(--muted); margin-top: auto; padding-top: 1rem; border-top: 1px dashed var(--line); }

/* ---------- chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; list-style: none; margin: 0; padding: 0; }
.chip {
  font: 400 0.76rem/1.35 var(--sans); letter-spacing: 0;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 0.42rem 0.62rem; color: #3d4750; background: var(--paper);
  max-width: 100%; overflow-wrap: anywhere;
}
.chip--amber { border-color: rgba(13, 92, 54, 0.35); background: rgba(18, 122, 69, 0.12); color: var(--green-deep-raw); }
.chip--ink { background: var(--ink); color: #fff; border-color: var(--ink); }
.band .chip { background: var(--band-veil); border-color: var(--band-line); color: inherit; }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: var(--r); background: var(--card); color: var(--text); margin-top: 0.4rem; }
table { border-collapse: collapse; width: 100%; min-width: 660px; font-size: 0.92rem; }
caption {
  caption-side: top; text-align: left; padding: 0 0 0.85rem;
  font: 600 0.94rem/1.35 var(--sans); letter-spacing: 0;
  color: var(--text);
}
caption span { display: block; font: 400 0.82rem/1.4 var(--sans); color: var(--muted); letter-spacing: 0; margin-top: 0.25rem; }
th, td { text-align: left; padding: 0.68rem 0.85rem; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
thead th {
  position: sticky; top: 0;
  background: var(--card); color: var(--muted);
  font: 500 0.68rem/1.35 var(--mono); letter-spacing: 0.08em; text-transform: uppercase;
  white-space: nowrap; border-bottom: 2px solid var(--ink-3);
}
tbody th { font: 600 0.9rem/1.4 var(--sans); white-space: nowrap; }
tbody tr:nth-child(even) { background: rgba(20, 24, 26, 0.022); }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { font-family: var(--mono); font-size: 0.86rem; letter-spacing: -0.01em; white-space: nowrap; }
tr.hl td, tr.hl th { background: rgba(18, 122, 69, 0.07); }
tr.hl th { box-shadow: inset 3px 0 0 var(--green-raw); }

/* key/value */
.kv { margin: 0; display: grid; grid-template-columns: 1fr; }
@media (min-width: 560px) { .kv { grid-template-columns: minmax(140px, 34%) 1fr; } }
.kv dt {
  font: 500 0.7rem/1.5 var(--mono); letter-spacing: 0.09em; text-transform: uppercase; color: var(--muted);
  padding-top: 0.75rem; border-top: 1px solid var(--line);
}
.kv dd { margin: 0; padding: 0.1rem 0 0.75rem; border-top: 1px solid var(--line); font-size: 0.97rem; }
@media (min-width: 560px) { .kv dd { border-left: 1px solid var(--line); padding-left: 1rem; } .kv dt { padding-left: 0; } }
.band .kv dt, .band .kv dd { border-color: var(--band-line); }

/* ---------- callouts ---------- */
.callout {
  border: 1px solid var(--line); border-left: 4px solid var(--brand);
  background: var(--card); padding: 1.15rem 1.25rem; border-radius: 0 var(--r) var(--r) 0;
}
.callout h4 { margin-bottom: 0.35em; }
.callout p { font-size: 0.96rem; }
.callout--warn { border-left-color: var(--warn); }
.callout--steel { border-left-color: var(--steel); }
.band .callout { background: var(--band-veil); border-color: var(--band-line); }
.band .callout p { color: var(--band-body); }

/* ---------- figures ---------- */
.figure { margin: 0; }
.figure img, .picture img { width: 100%; border-radius: var(--r); border: 1px solid var(--line); }
.figure figcaption {
  font: 400 0.85rem/1.5 var(--sans); color: var(--muted);
  padding-top: 0.65rem; margin-top: 0.65rem; border-top: 1px solid var(--line);
}
.plate { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 0.6rem; }
.band .plate { border-color: var(--band-line); }
.band .plate img { border: 0; }
.figure--split { display: grid; gap: clamp(1.1rem, 3vw, 2.4rem); align-items: center; }
@media (min-width: 900px) { .figure--split { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .figure--split--flip > .figure__media { order: 2; } }

.split { display: grid; gap: clamp(1.4rem, 3.5vw, 3rem); align-items: start; }
@media (min-width: 900px) { .split { grid-template-columns: minmax(0, 1.55fr) minmax(240px, 0.85fr); } }
@media (min-width: 900px) { .split--nav { grid-template-columns: 200px minmax(0, 1fr); } }

/* sticky mini nav */
.mini-nav { position: sticky; top: 108px; align-self: start; display: none; }
@media (min-width: 900px) { .mini-nav { display: block; } }
.mini-nav h4 { font: 500 0.68rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.8rem; }
.mini-nav ol { list-style: none; margin: 0; padding: 0; counter-reset: n; border-left: 1px solid var(--line); }
.mini-nav li { counter-increment: n; }
.mini-nav a {
  display: block; text-decoration: none; font-size: 0.88rem; color: var(--muted);
  padding: 0.42rem 0 0.42rem 0.9rem; margin-left: -1px; border-left: 2px solid transparent;
}
.mini-nav a::before { content: counter(n, decimal-leading-zero) " "; font: 500 0.72rem/1 var(--mono); color: var(--brand-deep); }
.mini-nav a:hover { color: var(--text); border-left-color: var(--brand); }

/* process diagram */
.diagram { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: clamp(0.9rem, 2vw, 1.4rem); }
.diagram svg { width: 100%; height: auto; display: block; }
.diagram text { font-family: var(--mono); }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; display: flex; gap: 0.9rem; align-items: flex-start;
  padding: 1.05rem 0; font: 600 1.03rem/1.45 var(--sans);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "+"; flex: none; font: 500 1.1rem/1.3 var(--mono); color: var(--brand-deep);
  width: 1.4rem; text-align: center;
}
.faq details[open] summary::before { content: "–"; }
.faq summary:hover { color: var(--brand-deep); }
.faq__a { padding: 0 0 1.2rem 2.3rem; max-width: 72ch; color: #3b454f; font-size: 0.98rem; }
.faq__a > :first-child { margin-top: 0; }
.faq__a ul { padding-left: 1.1rem; margin: 0.5rem 0; }
.faq__a li { margin-bottom: 0.3rem; }

/* ---------- forms ---------- */
form.quote { display: grid; gap: 1.15rem; }
.fields { display: grid; gap: 1.15rem; margin: 0; padding: 0; border: 0; }
@media (min-width: 640px) { .fields { grid-template-columns: repeat(2, minmax(0, 1fr)); } .fields .full { grid-column: 1 / -1; } }
.field { display: grid; gap: 0.4rem; }
.field label { font: 500 0.72rem/1.3 var(--mono); letter-spacing: 0.09em; text-transform: uppercase; color: #3d4750; }
.field label b { color: var(--warn); font-weight: 500; }
.field input, .field select, .field textarea {
  font: 400 1rem/1.45 var(--sans); color: var(--text);
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 0.72rem 0.8rem; width: 100%;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--brand-deep); outline: 2px solid rgba(18, 122, 69, 0.3); outline-offset: 0; }
.field small { font-size: 0.8rem; color: var(--muted); }
.field--check { display: flex; gap: 0.6rem; align-items: flex-start; }
.field--check input { width: auto; margin-top: 0.25rem; }
.field--check label { text-transform: none; letter-spacing: 0; font: 400 0.9rem/1.5 var(--sans); color: #3d4750; }

.form-note {
  border: 1px solid var(--line); border-left: 4px solid var(--steel);
  background: var(--card); padding: 1rem 1.15rem; font-size: 0.93rem; border-radius: 0 var(--r) var(--r) 0;
}
.form-status { font: 500 0.9rem/1.5 var(--mono); color: var(--brand-deep); min-height: 1.2em; }

/* ---------- CTA strip ---------- */
.cta-strip { background: var(--green-raw); color: #ffffff; --brand-deep: var(--brand-bright); padding-block: clamp(2.2rem, 5vw, 3.4rem); }
.cta-strip h2 { color: #ffffff; }
.cta-strip p { color: rgba(255, 255, 255, 0.9); max-width: 58ch; }
.cta-strip__in { display: grid; gap: 1.4rem; align-items: center; }
@media (min-width: 860px) { .cta-strip__in { grid-template-columns: 1fr auto; } }
.cta-strip__actions { display: flex; flex-wrap: wrap; gap: 0.6rem; }

/* ---------- footer ---------- */
.foot { background: var(--ink); color: #97a2ac; --brand: var(--brand-bright); --brand-deep: var(--brand-bright); padding-block: clamp(2.6rem, 5vw, 4rem) 1.6rem; font-size: 0.93rem; }
.foot h4 { color: #fff; font: 500 0.68rem/1 var(--mono); letter-spacing: 0.13em; text-transform: uppercase; margin-bottom: 1rem; }
.foot a { color: #c6ccd2; text-decoration: none; }
.foot a:hover { color: var(--brand-bright); }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.foot-grid { display: grid; gap: clamp(1.6rem, 3vw, 2.6rem); }
@media (min-width: 720px) { .foot-grid { grid-template-columns: 1.5fr 1fr 1fr; } }
@media (min-width: 1040px) { .foot-grid { grid-template-columns: 1.7fr 1fr 1fr 1.2fr; } }
.foot__brand b { font: 800 1.5rem/1 var(--display); letter-spacing: -0.045em; color: #fff; display: block; margin-bottom: 0.7rem; }
.foot__brand b i { font-style: normal; color: var(--brand-bright); }
.foot__bar {
  margin-top: clamp(1.8rem, 4vw, 3rem); padding-top: 1.2rem; border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex; flex-wrap: wrap; gap: 0.6rem 1.4rem; justify-content: space-between;
  font: 500 0.7rem/1.6 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: #8b959e;
}

/* ---------- WhatsApp FAB ---------- */
.wa-fab {
  position: fixed; right: 14px; bottom: 14px; z-index: 80;
  display: inline-flex; align-items: center; gap: 0.55rem;
  background: #0f7a41; color: #fff; text-decoration: none;
  border-radius: 999px; padding: 0.78rem 1.05rem 0.78rem 0.85rem;
  font: 600 0.9rem/1 var(--sans);
  box-shadow: 0 10px 26px -10px rgba(15, 122, 65, 0.8), 0 2px 0 rgba(0, 0, 0, 0.12);
}
.wa-fab:hover { background: #0c6234; }
.wa-fab svg { flex: none; }
.wa-fab span span { display: none; }
@media (min-width: 560px) { .wa-fab span span { display: inline; } }

/* ---------- page head (inner pages) ---------- */
.page-head { background: var(--ink); color: #eef1ee; --brand: var(--brand-bright); --brand-deep: var(--brand-bright); padding-block: clamp(2.2rem, 5vw, 3.6rem); position: relative; overflow: hidden; }
.page-head::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image: linear-gradient(rgba(99, 185, 129, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 185, 129, 0.14) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(110% 120% at 90% 0%, #000 10%, transparent 70%);
}
.page-head > * { position: relative; z-index: 1; }
.page-head h1 { font-size: clamp(2rem, 5vw, 3.2rem); color: #fff; }
.page-head .lede { color: #bcc4cb; }
.crumbs { font: 500 0.7rem/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: #7f8a94; margin-bottom: 1.1rem; }
.crumbs a { color: #a9b3bc; text-decoration: none; }
.crumbs a:hover { color: var(--brand-bright); }
.crumbs i { font-style: normal; padding-inline: 0.4rem; color: #8b959e; }

/* ---------- misc ---------- */
.tick { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.tick li { padding-left: 1.6rem; position: relative; font-size: 0.98rem; }
.tick li::before {
  content: ""; position: absolute; left: 0; top: 0.42em; width: 0.85rem; height: 0.5rem;
  border-left: 2px solid var(--brand-deep); border-bottom: 2px solid var(--brand-deep); transform: rotate(-45deg);
}
.tick--x li::before { border: 0; transform: none; content: "×"; left: 0.25rem; top: 0; color: var(--warn); font: 600 1.05rem/1.5 var(--sans); }

.bars { display: grid; gap: 0.85rem; margin: 0; padding: 0; list-style: none; }
.bars li { display: grid; grid-template-columns: 1fr auto; gap: 0.3rem 0.8rem; align-items: baseline; font-size: 0.94rem; }
.bars b { font-weight: 600; }
.bars i { font-style: normal; font: 500 0.8rem/1 var(--mono); color: var(--muted); }
.bars span { grid-column: 1 / -1; height: 6px; background: var(--paper-2); border-radius: 999px; overflow: hidden; }
.bars span em { display: block; height: 100%; background: var(--brand); }

.flow { counter-reset: step; display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
@media (min-width: 760px) { .flow { grid-template-columns: repeat(5, 1fr); } }
@media (min-width: 640px) and (max-width: 759px) { .flow { grid-template-columns: repeat(2, 1fr); } }
.flow div { background: var(--card); padding: 1.15rem 1.05rem; counter-increment: step; }
.flow div::before { content: "0" counter(step); display: block; font: 500 0.7rem/1 var(--mono); letter-spacing: 0.1em; color: var(--brand-deep); margin-bottom: 0.6rem; }
.flow h4 { font-size: 0.98rem; margin-bottom: 0.3em; }
.flow p { font-size: 0.88rem; color: var(--muted); margin: 0; }

.band .flow { background: var(--band-line); border-color: var(--band-line); }
.band .flow div { background: var(--band-surface); }
.band .flow p { color: var(--band-body); }

.pill-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.2rem 0 0; }

.app-card { position: relative; display: block; text-decoration: none; }
.app-card::after { content: "→"; position: absolute; right: 1.15rem; top: 1.15rem; font: 500 1rem/1 var(--mono); color: var(--brand-deep); }

hr.sec { border: 0; border-top: 1px solid var(--line); margin: 0; }

.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; }
/* hidden until focused; must not extend the scroll box in either writing direction */
.skip { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; z-index: 100; }
.skip:focus { width: auto; height: auto; margin: 0; clip-path: none; overflow: visible; padding: 0.7rem 1rem; background: var(--brand); color: #ffffff; inset-inline-start: 8px; top: 0; }

/* scrollable technical drawing keeps the mono labels legible on a phone */
.diagram-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.diagram-scroll svg { min-width: 720px; }
/* a wide svg must not stretch its grid or flex track, or the page overflows instead of scrolling */
.split > *, .grid > *, .figure, .figure--split > *, .card, .prod__body { min-width: 0; }
.diagram-scroll::after { content: "swipe the drawing →"; display: block; font: 500 0.68rem/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); padding-top: 0.6rem; }


ol.tick { counter-reset: step; }
ol.tick li { counter-increment: step; padding-left: 2.3rem; }
ol.tick li::before {
  content: "0" counter(step); border: 0; transform: none; width: auto; height: auto;
  left: 0; top: 0.1em; font: 500 0.82rem/1.6 var(--mono); color: var(--brand-deep);
}


/* ---------- spacing utilities ---------- */
.mt-sm { margin-top: 1rem; }
.mt-md { margin-top: 1.6rem; }
.mt-lg { margin-top: 3.4rem; }
.mb-md { margin-bottom: 1.6rem; }
.mb-lg { margin-bottom: 2.6rem; }
.stack { margin-top: .5rem; }
.stack .btn { width: 100%; justify-content: center; }
.card__foot { margin-top: auto; padding-top: 1.2rem; }
.card--muted { background: var(--paper); border-color: var(--line-soft); }
.card__idx--no { color: var(--warn); }
.figure figcaption.figcap--ink { color: var(--band-body); border-top-color: var(--band-line); }
.table-flush { border: 0; background: transparent; }
.preview { white-space: pre-wrap; margin: 0; padding: 1rem; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); font: 400 .86rem/1.6 var(--mono); min-height: 8rem; overflow: auto; }

/* ---------- breadcrumbs ---------- */
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; align-items: center; }
.crumbs li { display: flex; align-items: center; font: 500 .7rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: #7f8a94; }
.crumbs li:last-child i { display: none; }

/* ---------- language switcher ---------- */
.lang-slot { flex: 1; display: flex; justify-content: center; }
.lang-switch ul { list-style: none; display: flex; gap: .1rem; margin: 0; padding: 0; }
.lang-switch a {
  display: block; text-decoration: none; color: #556069;
  font: 500 .68rem/1 var(--mono); letter-spacing: .06em;
  padding: .35rem .42rem; border-radius: 2px;
}
.lang-switch a:hover { color: var(--brand-deep); background: rgba(18, 122, 69, .12); }
.lang-switch a[aria-current] { color: var(--brand-deep); background: rgba(18, 122, 69, .14); }
.lang-inline { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: 1rem; }
.lang-inline a {
  text-decoration: none; font: 500 .78rem/1 var(--sans);
  border: 1px solid var(--line); border-radius: 999px; padding: .4rem .62rem; color: #3d4750;
}
.lang-inline a.on { border-color: var(--brand-deep); background: rgba(18, 122, 69, .14); color: var(--brand-deep); }
.foot .lang-inline a { border-color: rgba(255, 255, 255, .2); color: #c6ccd2; }
.foot .lang-inline a.on { color: var(--brand-bright); border-color: var(--brand-bright); }
@media (max-width: 700px) { .lang-slot { display: none; } }
@media (max-width: 560px) { .topbar-wa { display: none; } }

/* ---------- faq groups ---------- */
.faq-group { margin: 2.4rem 0 .4rem; font-size: 1.18rem; }
.faq-group:first-of-type { margin-top: 0; }
.faq__a p { margin-bottom: .6rem; }

/* ---------- application blocks ---------- */
.app-block { padding-top: 3rem; margin-top: 3rem; border-top: 1px solid var(--line); }
.app-block:first-of-type { border-top: 0; }
.app-block h2 { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }

/* ---------- RTL ---------- */
[dir="rtl"] body { font-family: "IBM Plex Sans Arabic", "IBM Plex Sans", system-ui, sans-serif; }
[dir="rtl"] h1, [dir="rtl"] h2, [dir="rtl"] h3, [dir="rtl"] h4 { font-family: "IBM Plex Sans Arabic", "Archivo", sans-serif; letter-spacing: 0; }
[dir="rtl"] .eyebrow { flex-direction: row-reverse; }
[dir="rtl"] .card__list li, [dir="rtl"] .tick li { padding-left: 0; padding-right: 1.6rem; }
[dir="rtl"] .card__list li::before { left: auto; right: 0; content: "←"; }
[dir="rtl"] .tick li::before { left: auto; right: 0; }
[dir="rtl"] ol.tick li { padding-left: 0; padding-right: 2.3rem; }
[dir="rtl"] .callout { border-left: 1px solid var(--line); border-right: 4px solid var(--brand); border-radius: var(--r) 0 0 var(--r); }
[dir="rtl"] .callout--warn { border-right-color: var(--warn); }
[dir="rtl"] .callout--steel { border-right-color: var(--steel); }
[dir="rtl"] .mini-nav ol { border-left: 0; border-right: 1px solid var(--line); }
[dir="rtl"] .mini-nav a { padding-left: 0; padding-right: .9rem; border-left: 0; border-right: 2px solid transparent; }
[dir="rtl"] .mini-nav a:hover { border-right-color: var(--brand); }
[dir="rtl"] .kv dd { border-left: 0; padding-left: 0; padding-right: 1rem; border-right: 1px solid var(--line); }
[dir="rtl"] .app-card::after { right: auto; left: 1.15rem; content: "←"; }
[dir="rtl"] .wa-fab { right: auto; left: 14px; }
[dir="rtl"] table th, [dir="rtl"] table td { text-align: right; }
[dir="rtl"] .statbar div { border-right: 0; border-left: 1px solid var(--line); }
[dir="rtl"] .statbar b { direction: ltr; unicode-bidi: isolate; }
[dir="rtl"] .statbar div:last-child { border-left: 0; }
[dir="rtl"] caption { text-align: right; }
[dir="rtl"] .diagram-scroll::after { content: "→ اسحب المخطط"; }

/* ---------- Arabic type scale ---------- */
[dir="rtl"] body { font-size: 18px; line-height: 1.78; }
[dir="rtl"] h1 { font-size: clamp(2rem, 5.4vw, 3.4rem); line-height: 1.18; }
[dir="rtl"] h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); line-height: 1.22; }
[dir="rtl"] .topbar, [dir="rtl"] .foot__bar { letter-spacing: 0; }
[dir="rtl"] .mono, [dir="rtl"] .preview { direction: ltr; text-align: right; unicode-bidi: isolate; }
[dir="rtl"] td.num, [dir="rtl"] th.num { direction: ltr; unicode-bidi: isolate; }

/* ---------- trademark ---------- */
.foot__logo { height: clamp(26px, 3.4vw, 40px); width: auto; max-width: 100%; display: block; margin-bottom: 1.1rem; }

/* ---------- range table and series cards ---------- */
table.range th[scope="row"] { font-family: var(--mono); font-weight: 600; letter-spacing: -0.01em; }
table.range td.sr { font: 600 0.72rem/1.4 var(--mono); letter-spacing: 0.06em; color: var(--brand-deep); white-space: nowrap; }
table.range tbody tr { border-top: 1px solid var(--line-soft); }
table.range tbody tr:nth-child(even) { background: none; }
table.range tbody tr.grp-start { border-top: 1px solid var(--line); }

.scards { display: grid; gap: 1px; background: var(--line-soft); border: 1px solid var(--line); border-radius: var(--r); }
.scard {
  display: grid; grid-template-columns: 1fr; gap: 1.1rem;
  background: var(--card); padding: clamp(1.15rem, 2.4vw, 1.7rem);
  scroll-margin-top: 96px;
}
@media (min-width: 720px) { .scard { grid-template-columns: 232px minmax(0, 1fr); gap: 1.6rem; } }
.scard__photo { margin: 0; }
.scard__photo img { width: 100%; height: auto; display: block; }
.scard__code { font: 500 0.72rem/1.4 var(--mono); letter-spacing: 0.06em; color: var(--muted); margin-bottom: 0.35rem; }
.scard h3 { font-size: clamp(1.05rem, 1.9vw, 1.3rem); margin-bottom: 0.75rem; }
.scard .tick { gap: 0.45rem; }
.tick--sm li { font-size: 0.92rem; }

/* ---------- photo gallery ---------- */
.gal { display: grid; gap: 1rem; grid-template-columns: repeat(2, 1fr); }
.gal--4 { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.gal figure { margin: 0; }
.gal img { width: 100%; height: auto; background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: .3rem; }
.gal figcaption { font: 400 .78rem/1.45 var(--sans); color: var(--muted); padding-top: .5rem; }

/* ---------- series index strip ---------- */
.series-strip {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line);
}
@media (min-width: 760px) { .series-strip { grid-template-columns: repeat(5, 1fr); } }
.series-strip a { display: block; background: var(--card); padding: 0.95rem 1rem; text-decoration: none; }
.series-strip a:hover { background: #eef1ee; }
.series-strip b { display: block; font: 600 0.82rem/1 var(--mono); letter-spacing: 0.08em; color: var(--brand-deep); }
.series-strip span { display: block; margin-top: 0.45rem; font-size: 0.8rem; line-height: 1.45; color: var(--muted); }
.figure--tight { max-width: 320px; }

.card--split { display: grid; grid-template-columns: 1fr; gap: 1.1rem; }
@media (min-width: 560px) { .card--split { grid-template-columns: 200px minmax(0, 1fr); gap: 1.4rem; } }

.scard__feed { margin-top: 0.9rem; padding-top: 0.7rem; border-top: 1px dashed var(--line); font: 500 0.78rem/1.5 var(--sans); color: var(--muted); }