/* ==========================================================================
   BM Machinery UI — "Technical Catalogue" design system
   bmmgp.com · marine deck, mooring & safety equipment

   --------------------------------------------------------------------------
   DESIGN DIRECTION
   This is deliberately NOT the "dark steel + signal orange" card-grid look.
   It is modelled on a European precision-equipment catalogue:

     · warm paper stock, near-black ink, hairline rules — no shadows
     · a single saturated accent (the brand red from the helm logo)
     · editorial serif display against technical mono metadata
     · engineering-drawing furniture: registration crosses, dimension
       lines, numbered sections, catalogue index rows
     · square corners; structure comes from rules, not from elevation

   HOW TO USE
   1. Tokens live in :root. Change a value, every template follows.
   2. Components are namespaced by block.
   3. No shadows, no pills, no gradients on chrome. If you add one, you are
      drifting back to the old look.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Surfaces — warm paper, like a printed technical catalogue */
  --paper:        #f1eee8;
  --paper-raised: #fbfaf7;
  --paper-deep:   #e6e1d7;
  --paper-invert: #15171a;
  --paper-cool:   #eef1f0;

  /* Ink */
  --ink:      #16181c;
  --ink-80:   #35383e;
  --ink-60:   #5d6169;
  --ink-40:   #8b8f96;
  --ink-20:   #b9bcc1;

  /* Rules — the only separators in this system */
  --rule:      #d0c9bd;
  --rule-soft: #e3ded4;
  --rule-firm: #16181c;
  --rule-invert: #34383d;

  /* Brand */
  --signal:      #d71920;
  --signal-deep: #a8141a;
  --signal-wash: #fbe9e8;
  --petrol:      #123b3c;
  --petrol-deep: #0b2829;

  /* Type */
  --font-display: "Instrument Serif", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-ui: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --fs-display: clamp(2.75rem, 6.4vw, 5.25rem);
  --fs-hero:    clamp(2.1rem, 4.4vw, 3.5rem);
  --fs-h1:      clamp(1.8rem, 3.2vw, 2.6rem);
  --fs-h2:      clamp(1.35rem, 2.2vw, 1.85rem);
  --fs-h3:      1.125rem;
  --fs-lead:    1.0625rem;
  --fs-body:    0.9375rem;
  --fs-small:   0.8125rem;
  --fs-micro:   0.6875rem;

  --track-wide: 0.16em;
  --track-mono: 0.08em;

  /* Spacing */
  --sp-1: 4px;   --sp-2: 8px;   --sp-3: 12px;  --sp-4: 16px;
  --sp-5: 24px;  --sp-6: 32px;  --sp-7: 48px;  --sp-8: 64px;
  --sp-9: 96px;  --sp-10: 128px;

  /* Square corners only */
  --r-0: 0px;
  --r-1: 2px;

  --container: 1320px;
  --measure: 62ch;
  --header-h: 84px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--ink-80);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "kern" 1;
}

h1, h2, h3, h4 {
  margin: 0 0 var(--sp-3);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.015em;
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-body); }
p { margin: 0 0 var(--sp-4); }

a { color: inherit; text-decoration: none; transition: color 0.18s var(--ease), border-color 0.18s var(--ease); }

img { max-width: 100%; height: auto; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
figure { margin: 0; }
table { border-collapse: collapse; width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

::selection { background: var(--signal); color: #fff; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--paper-invert); color: var(--paper); padding: var(--sp-3) var(--sp-5);
  font-family: var(--font-mono); font-size: var(--fs-micro); text-transform: uppercase; letter-spacing: var(--track-mono);
}
.skip-link:focus { left: 0; color: var(--paper); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* --------------------------------------------------------------------------
   3. Typography primitives
   -------------------------------------------------------------------------- */
.display {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 0.98;
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--ink-60);
}

.eyebrow {
  display: inline-flex; align-items: baseline; gap: var(--sp-2);
  font-family: var(--font-mono); font-size: var(--fs-micro); font-weight: 500;
  letter-spacing: var(--track-wide); text-transform: uppercase; color: var(--signal);
  margin: 0 0 var(--sp-3);
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--signal); }

.lede { font-size: var(--fs-lead); color: var(--ink-60); max-width: 56ch; }

/* Section index marker — the big numbered plate */
.sec-no {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 7vw, 6rem);
  line-height: 0.78;
  color: var(--ink);
  font-style: italic;
  letter-spacing: -0.04em;
}

/* --------------------------------------------------------------------------
   4. Layout primitives
   -------------------------------------------------------------------------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--sp-6); }
.container--narrow { max-width: 980px; }

.section { padding-block: var(--sp-9); }
.section--tight { padding-block: var(--sp-7); }
.section--raised { background: var(--paper-raised); }
.section--deep { background: var(--paper-deep); }
.section--invert { background: var(--paper-invert); color: #b9bec4; }
.section--invert h1, .section--invert h2, .section--invert h3 { color: var(--paper); }
.section--invert .lede { color: #93999f; }
.section--invert .mono { color: #7d838a; }

.stack > * + * { margin-top: var(--sp-4); }

.grid { display: grid; gap: var(--sp-6); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--sidebar { grid-template-columns: 272px minmax(0, 1fr); gap: var(--sp-7); align-items: start; }
.grid--split { grid-template-columns: minmax(0, 1fr) var(--split-rail, 380px); gap: var(--sp-7); align-items: start; }
.grid--split > * { min-width: 0; }
.pdp-grid { --split-rail: 420px; }

/* Section header — index number, title, rule */
.sec-head {
  display: grid; grid-template-columns: auto minmax(0, 1fr);
  gap: var(--sp-5); align-items: end;
  padding-bottom: var(--sp-4); border-bottom: 1px solid var(--rule-firm);
  margin-bottom: var(--sp-7);
}
.sec-head__body { display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-5); flex-wrap: wrap; }
.sec-head h2 { margin: 0; }
.section--invert .sec-head { border-bottom-color: var(--rule-invert); }

/* Hairline rule */
.rule { height: 1px; background: var(--rule); border: 0; margin: 0; }
.rule--firm { background: var(--rule-firm); }
.rule--soft { background: var(--rule-soft); }

/* --------------------------------------------------------------------------
   5. Buttons & links
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-3);
  padding: 13px 22px; border: 1px solid var(--rule-firm); border-radius: var(--r-1);
  background: transparent; color: var(--ink);
  font-family: var(--font-mono); font-size: var(--fs-micro);
  font-weight: 500; letter-spacing: var(--track-mono); text-transform: uppercase;
  white-space: nowrap;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn:active { background: var(--signal-deep); border-color: var(--signal-deep); color: #fff; }

.btn--primary, .btn--accent { background: var(--signal); border-color: var(--signal); color: #fff; }
.btn--primary:hover, .btn--accent:hover { background: var(--signal-deep); border-color: var(--signal-deep); color: #fff; }
.btn--ink { background: var(--paper-invert); border-color: var(--paper-invert); color: var(--paper); }
.btn--ink:hover { background: var(--signal); border-color: var(--signal); color: #fff; }
.btn--blue { background: var(--petrol); border-color: var(--petrol); color: #fff; }
.btn--blue:hover { background: var(--petrol-deep); border-color: var(--petrol-deep); color: #fff; }
.btn--ghost { border-color: var(--rule); color: var(--ink-60); }
.btn--ghost:hover { border-color: var(--rule-firm); background: transparent; color: var(--ink); }
.btn--onDark { border-color: #4b5158; color: #d3d7db; }
.btn--onDark:hover { background: var(--paper); border-color: var(--paper); color: var(--paper-invert); }

.btn--sm { padding: 9px 15px; }
.btn--lg { padding: 16px 30px; }
.btn--block { width: 100%; }

.btn__arrow { transition: transform 0.22s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }

/* Editorial underline link */
.link-arrow {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: var(--track-mono); text-transform: uppercase; color: var(--ink);
  padding-bottom: 3px; border-bottom: 1px solid var(--rule-firm);
}
.link-arrow::after { content: "→"; transition: transform 0.22s var(--ease); }
.link-arrow:hover { color: var(--signal); border-bottom-color: var(--signal); }
.link-arrow:hover::after { transform: translateX(4px); }

/* --------------------------------------------------------------------------
   6. Header / utility bar / navigation
   -------------------------------------------------------------------------- */
.utilbar {
  background: var(--paper-invert); color: #83898f;
  font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: var(--track-mono); text-transform: uppercase;
}
.utilbar__inner { display: flex; align-items: center; justify-content: space-between; height: 36px; gap: var(--sp-5); }
.utilbar__list { display: flex; gap: var(--sp-5); }
.utilbar a { color: #a7adb3; }
.utilbar a:hover { color: var(--signal); }
.utilbar__lang { display: flex; gap: var(--sp-3); align-items: center; }
.utilbar__lang a[aria-current="true"] { color: var(--paper); }

.site-header {
  position: sticky; top: 0; z-index: 60;
  background: var(--paper);
  border-bottom: 1px solid var(--rule-firm);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-6); height: var(--header-h); }

.brand { display: flex; align-items: center; gap: var(--sp-3); flex-shrink: 0; }
.brand__mark {
  width: 44px; height: 44px; flex-shrink: 0;
  background: var(--signal); color: #fff;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: var(--fs-small); font-weight: 600; letter-spacing: 0.02em;
}
.brand__name {
  display: block; font-family: var(--font-ui); font-size: 1.0625rem; font-weight: 700;
  color: var(--ink); letter-spacing: -0.02em; line-height: 1.1;
}
.brand__cn { display: block; font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-40); letter-spacing: 0.3em; }

.header-tools { display: flex; align-items: center; gap: var(--sp-5); }
.header-tools__phone { text-align: right; line-height: 1.3; }
.header-tools__phone strong { display: block; font-size: var(--fs-body); color: var(--ink); font-weight: 600; }
.header-tools__phone span { font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-40); }

.searchbox { position: relative; display: flex; align-items: center; }
.searchbox input {
  width: 250px; padding: 10px 42px 10px 14px;
  border: 1px solid var(--rule); border-radius: var(--r-1);
  background: var(--paper-raised); font-size: var(--fs-small);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.searchbox input:focus { border-color: var(--rule-firm); background: #fff; outline: none; }
.searchbox button {
  position: absolute; right: 3px; top: 50%; transform: translateY(-50%);
  width: 32px; height: 32px; border: 0; border-radius: var(--r-1);
  background: var(--paper-invert); display: grid; place-items: center; color: var(--paper);
}
.searchbox button:hover { background: var(--signal); color: #fff; }

/* Primary navigation */
.mainnav { background: var(--paper-invert); }
.mainnav__inner { display: flex; align-items: stretch; position: relative; }
.mainnav__list { display: flex; flex-wrap: wrap; }
.mainnav__item { position: static; }
.mainnav__link {
  display: flex; align-items: center; gap: var(--sp-2);
  padding: 17px var(--sp-5);
  color: #9ba1a8;
  font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: var(--track-mono); text-transform: uppercase;
  border-bottom: 2px solid transparent;
}
.mainnav__link:hover, .mainnav__item:hover > .mainnav__link {
  color: #fff; border-bottom-color: var(--signal); background: rgba(255, 255, 255, 0.04);
}
.mainnav__link[aria-current="page"] { color: #fff; border-bottom-color: var(--signal); }
.mainnav__link .caret {
  width: 7px; height: 7px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translateY(-2px); opacity: 0.6;
}

/* Mega menu — full-width panel anchored to the nav bar */
.megamenu {
  position: absolute; left: 0; right: 0; top: 100%; z-index: 50; width: auto;
  background: var(--paper-raised);
  border-top: 2px solid var(--signal);
  border-bottom: 1px solid var(--rule-firm);
  padding: var(--sp-6) var(--sp-6) var(--sp-7);
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-7);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease), visibility 0.18s;
}
.mainnav__item:hover .megamenu,
.mainnav__item:focus-within .megamenu { opacity: 1; visibility: visible; transform: translateY(0); }
.megamenu__col-title {
  font-family: var(--font-mono); font-size: var(--fs-micro); font-weight: 500;
  letter-spacing: var(--track-wide); text-transform: uppercase; color: var(--ink-40);
  margin: 0 0 var(--sp-3); padding-bottom: 6px; border-bottom: 1px solid var(--rule);
}
.megamenu__list a {
  display: block; padding: 6px 0; color: var(--ink-80); font-size: var(--fs-small);
  border-bottom: 1px solid transparent;
}
.megamenu__list a:hover { color: var(--signal); border-bottom-color: var(--signal); }
.megamenu__feature { border-left: 1px solid var(--rule); padding-left: var(--sp-6); align-self: stretch; }

.nav-toggle { display: none; background: transparent; color: var(--paper); border: 1px solid var(--rule-invert); border-radius: var(--r-1); padding: 9px 11px; }
.nav-toggle span { display: block; width: 18px; height: 1px; background: currentColor; margin: 3px 0; }

/* --------------------------------------------------------------------------
   7. Media slot — engineering drawing frame with registration marks
   -------------------------------------------------------------------------- */
.ph {
  position: relative; overflow: hidden;
  background:
    repeating-linear-gradient(45deg, rgba(22, 24, 28, 0.035) 0 10px, transparent 10px 20px),
    var(--paper-deep);
  display: grid; place-items: center; color: var(--ink-40);
}
.ph__label {
  position: relative; z-index: 1;
  font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: var(--track-mono); text-transform: uppercase; color: var(--ink-40);
  display: inline-flex; align-items: center; gap: 7px;
}
.ph__label::before { content: ""; width: 14px; height: 14px; border: 1px solid var(--ink-20); }
.ph--16x9 { aspect-ratio: 16 / 9; }
.ph--16x7 { aspect-ratio: 16 / 7; }
.ph--4x3  { aspect-ratio: 4 / 3; }
.ph--3x2  { aspect-ratio: 3 / 2; }
.ph--1x1  { aspect-ratio: 1 / 1; }
.ph--dark { background: repeating-linear-gradient(45deg, rgba(255,255,255,0.04) 0 10px, transparent 10px 20px), var(--petrol-deep); }
.ph--dark .ph__label { color: #6d7a78; }
.ph--dark .ph__label::before { border-color: #3c4a49; }

/* Registration crosses in the corners of a drawing frame */
.regframe { position: relative; }
.regframe::before, .regframe::after {
  content: ""; position: absolute; width: 11px; height: 11px; pointer-events: none; z-index: 3;
}
.regframe::before {
  top: 8px; left: 8px;
  border-top: 1px solid var(--ink-20); border-left: 1px solid var(--ink-20);
}
.regframe::after {
  bottom: 8px; right: 8px;
  border-bottom: 1px solid var(--ink-20); border-right: 1px solid var(--ink-20);
}

/* --------------------------------------------------------------------------
   7b. Real imagery
   --------------------------------------------------------------------------
   .media is the frame for a real photograph. It keeps the same hairline
   border and paper backdrop as the .ph placeholder, so a slot can be
   swapped from placeholder to photograph without the layout moving.
   -------------------------------------------------------------------------- */
.media {
  position: relative; overflow: hidden;
  background: var(--paper-deep); border: 1px solid var(--rule);
}
.media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--3x2 { aspect-ratio: 3 / 2; }
.media--16x7 { aspect-ratio: 16 / 7; }
/* Contain mode: for drawings, logos and anything with transparent margins */
.media--contain { background: #fff; }
.media--contain img { object-fit: contain; }

/* Brand plate — the logo is now a transparent PNG cut out of the archived
   JPEG (tools/cutout_logo.py), so the mark floats directly on the paper
   instead of sitting on a white card. The footer is inverted and therefore
   uses the white knockout variant. */
.brand__plate { display: block; line-height: 0; }
.brand__plate img { height: 38px; width: auto; display: block; }
.site-footer .brand__plate img { height: 32px; }

/* QR code — square PNG that already carries its own 4-module quiet zone, so
   the frame adds a hairline and nothing else. Use .qr--card for the tall
   WeChat profile card. */
.qr { width: 156px; background: #fff; border: 1px solid var(--rule); padding: 0; line-height: 0; }
.qr img { display: block; width: 100%; height: auto; }
.qr--sm { width: 112px; }
.qr--card { width: 196px; padding: 8px; }

/* --------------------------------------------------------------------------
   8. Cards & catalogue index rows
   -------------------------------------------------------------------------- */
.card {
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: var(--r-1);
  overflow: hidden; display: flex; flex-direction: column;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.card:hover { border-color: var(--rule-firm); background: #fff; }
.card__media { position: relative; display: block; overflow: hidden; border-bottom: 1px solid var(--rule); }
.card__body { padding: var(--sp-4) var(--sp-5) var(--sp-5); display: flex; flex-direction: column; gap: 7px; flex: 1; }
.card__title { font-size: var(--fs-h3); font-weight: 600; margin: 0; line-height: 1.3; }
.card__title a { color: var(--ink); }
.card__title a:hover { color: var(--signal); }
.card__desc { font-size: var(--fs-small); color: var(--ink-60); margin: 0; flex: 1; }
.card__meta { font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-40); display: flex; gap: var(--sp-3); flex-wrap: wrap; letter-spacing: var(--track-mono); }
.card__foot { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); padding-top: var(--sp-3); border-top: 1px solid var(--rule-soft); }

.card--category .card__media { aspect-ratio: 16 / 11; }
.card--category .card__body { padding: var(--sp-5); }
.card--article .card__media { aspect-ratio: 16 / 9; }
.card--article .card__body { gap: var(--sp-3); }

/* Catalogue index row — the product listing treatment */
.index-list { border-top: 1px solid var(--rule-firm); }
.index-row {
  display: grid; grid-template-columns: 44px 132px minmax(0, 1fr) auto;
  gap: var(--sp-5); align-items: center;
  padding: var(--sp-4) 0; border-bottom: 1px solid var(--rule);
  transition: background 0.18s var(--ease);
}
.index-row:hover { background: var(--paper-raised); }
.index-row__no {
  font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-40);
  letter-spacing: var(--track-mono); align-self: start; padding-top: 4px;
}
.index-row__media { border: 1px solid var(--rule); }
.index-row__title { font-size: var(--fs-lead); font-weight: 600; margin: 0 0 4px; line-height: 1.25; }
.index-row__title a { color: var(--ink); }
.index-row__title a:hover { color: var(--signal); }
.index-row__spec {
  font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-60);
  letter-spacing: var(--track-mono); text-transform: uppercase;
  display: flex; flex-wrap: wrap; gap: var(--sp-3);
}
.index-row__spec span:not(:last-child)::after { content: "·"; margin-left: var(--sp-3); color: var(--ink-20); }
.index-row__action { display: flex; align-items: center; gap: var(--sp-4); }

/* Feature block */
.feature { padding: var(--sp-5) 0; border-top: 1px solid var(--rule-firm); height: 100%; }
.feature__icon {
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: var(--track-wide);
  color: var(--signal); margin-bottom: var(--sp-3); display: block;
}
.feature h4 { margin-bottom: var(--sp-2); font-size: var(--fs-lead); }
.feature p { font-size: var(--fs-small); color: var(--ink-60); margin: 0; }

.badge {
  display: inline-block; padding: 2px 8px; border: 1px solid var(--rule);
  border-radius: var(--r-1);
  font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: var(--track-mono); text-transform: uppercase;
  background: var(--paper-deep); color: var(--ink-60);
}
.badge--accent { background: var(--signal); border-color: var(--signal); color: #fff; }
.badge--ok { border-color: #9fc7b2; background: #eaf4ee; color: #1f6b47; }
.badge--warn { border-color: #d9bd7d; background: #faf2e0; color: #8a6414; }
.badge--dark { background: var(--paper-invert); border-color: var(--paper-invert); color: var(--paper); }

/* --------------------------------------------------------------------------
   9. Editorial hero
   -------------------------------------------------------------------------- */
.hero { position: relative; background: var(--paper-invert); overflow: hidden; color: #b9bec4; }
.hero__slides { display: flex; transition: transform 0.6s var(--ease); }
.hero__slide { flex: 0 0 100%; position: relative; }
.hero__bg { position: absolute; inset: 0; }
/* The hero carries a real photograph (the site's own product and yard
   photography). It fills the frame and is knocked back by a scrim so the
   headline and the metadata block keep their contrast. */
.hero__bg .media { position: absolute; inset: 0; border: 0; background: var(--petrol-deep); }
.hero__bg .media img { width: 100%; height: 100%; object-fit: cover; object-position: center 40%; }
.hero__scrim {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(100deg,
    rgba(9, 34, 35, 0.95) 0%,
    rgba(9, 34, 35, 0.88) 34%,
    rgba(9, 34, 35, 0.66) 58%,
    rgba(9, 34, 35, 0.88) 100%);
}
.hero__bg .ph__label {
  position: absolute; left: var(--sp-6); bottom: var(--sp-5);
  opacity: 0.5; font-size: var(--fs-micro);
}
.hero__bg .ph__label::before { border-color: #46504f; }
.hero__grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
  gap: var(--sp-8); align-items: center;
  padding-block: var(--sp-9);
}
.hero__content h1, .hero__content .hero__title {
  font-family: var(--font-display); font-weight: 400;
  font-size: var(--fs-hero); color: var(--paper);
  letter-spacing: -0.025em; line-height: 1.0;
  margin: 0 0 var(--sp-5);
}
.hero__content p { color: #9ba1a8; font-size: var(--fs-lead); max-width: 48ch; margin-bottom: var(--sp-6); }
.hero__actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; }

/* Technical metadata block beside the hero headline */
.metablock { border-top: 1px solid var(--rule-invert); }
.metablock__row {
  display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-4);
  padding: 11px 0; border-bottom: 1px solid var(--rule-invert);
}
.metablock__key {
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: var(--track-mono);
  text-transform: uppercase; color: #6f757b; min-width: 0; flex: 0 1 auto;
}
.metablock__val {
  font-family: var(--font-mono); font-size: var(--fs-small); color: var(--paper);
  text-align: right; min-width: 0; flex: 1 1 auto; overflow-wrap: anywhere;
}

.hero__dots { position: absolute; left: 0; right: 0; bottom: 0; display: flex; z-index: 3; }
.hero__dots button { flex: 1; height: 3px; border: 0; background: #34383d; padding: 0; }
.hero__dots button[aria-current="true"] { background: var(--signal); }
.hero__arrow {
  position: absolute; bottom: var(--sp-5); z-index: 3;
  width: 40px; height: 40px; border-radius: var(--r-1);
  border: 1px solid var(--rule-invert); background: transparent; color: var(--paper);
  display: grid; place-items: center; font-size: 1.1rem;
}
.hero__arrow:hover { background: var(--signal); border-color: var(--signal); color: #fff; }
.hero__arrow--prev { right: calc(var(--sp-6) + 48px); }
.hero__arrow--next { right: var(--sp-6); }

/* Trust strip */
.trustbar { background: var(--paper-invert); border-top: 1px solid var(--rule-invert); color: #83898f; }
.trustbar__inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.trustbar__item {
  padding: var(--sp-5) var(--sp-5) var(--sp-5) 0;
  border-right: 1px solid var(--rule-invert);
}
.trustbar__item:last-child { border-right: 0; }
.trustbar__item + .trustbar__item { padding-left: var(--sp-5); }
.trustbar__item strong {
  display: block; font-family: var(--font-mono); font-size: var(--fs-small);
  color: var(--paper); letter-spacing: var(--track-mono); font-weight: 500;
}
.trustbar__item span { font-family: var(--font-mono); font-size: var(--fs-micro); color: #6f757b; letter-spacing: var(--track-mono); text-transform: uppercase; }

/* --------------------------------------------------------------------------
   10. Breadcrumb & page header
   -------------------------------------------------------------------------- */
.crumbs {
  font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: var(--track-mono); text-transform: uppercase; color: var(--ink-40);
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-2);
}
.crumbs a { color: var(--ink-60); }
.crumbs a:hover { color: var(--signal); }
.crumbs li:not(:last-child)::after { content: "/"; margin-left: var(--sp-2); color: var(--ink-20); }
.crumbs li { display: flex; align-items: center; gap: var(--sp-2); }
.crumbs [aria-current="page"] { color: var(--ink); }

.pagehead { background: var(--paper-raised); border-bottom: 1px solid var(--rule-firm); padding-block: var(--sp-6); }
.pagehead__inner { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--sp-6); flex-wrap: wrap; }
.pagehead h1 { font-family: var(--font-display); font-weight: 400; font-size: var(--fs-h1); margin: var(--sp-3) 0 0; letter-spacing: -0.02em; }
.pagehead__desc { color: var(--ink-60); margin: var(--sp-3) 0 0; max-width: 58ch; }

/* --------------------------------------------------------------------------
   11. Sidebar / facets
   -------------------------------------------------------------------------- */
/* Sticky side columns can exceed the viewport, so they scroll internally.
   The scrollbar is hairline-thin and neutral — it must not compete with the
   page furniture. */
.sidebar, .rail { scrollbar-width: thin; scrollbar-color: var(--rule) transparent; }
.sidebar::-webkit-scrollbar, .rail::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-track, .rail::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb, .rail::-webkit-scrollbar-thumb { background: var(--rule); }
.sidebar::-webkit-scrollbar-thumb:hover, .rail::-webkit-scrollbar-thumb:hover { background: var(--ink-40); }

.sidebar {
  position: sticky; top: calc(var(--header-h) + var(--sp-4));
  max-height: calc(100vh - var(--header-h) - var(--sp-6));
  overflow-y: auto; overscroll-behavior: contain;
  display: grid; gap: var(--sp-6); align-content: start; padding-right: 4px;
}

.panel { border: 1px solid var(--rule); border-radius: var(--r-1); background: var(--paper-raised); overflow: hidden; }
.panel__head {
  padding: var(--sp-3) var(--sp-4);
  background: var(--paper-invert); color: var(--paper);
  font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: var(--track-wide); text-transform: uppercase;
  display: flex; align-items: center; justify-content: space-between;
}
.panel__body { padding: var(--sp-4); }

.cat-tree__item { border-bottom: 1px solid var(--rule-soft); }
.cat-tree__item:last-child { border-bottom: 0; }
.cat-tree__link {
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3);
  padding: 10px var(--sp-4); color: var(--ink-70, var(--ink-80)); font-size: var(--fs-small);
}
.cat-tree__link:hover { background: var(--paper-deep); color: var(--signal); }
.cat-tree__link[aria-current="page"] { background: var(--paper-invert); color: var(--paper); }
.cat-tree__link .count { font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-40); }
.cat-tree__link[aria-current="page"] .count { color: #7f858b; }

.facet { border-bottom: 1px solid var(--rule-soft); padding-block: var(--sp-3); }
.facet:last-child { border-bottom: 0; }
.facet__title {
  font-family: var(--font-mono); font-size: var(--fs-micro); font-weight: 500;
  letter-spacing: var(--track-wide); text-transform: uppercase; color: var(--ink-40);
  margin: 0 0 var(--sp-2);
}
.facet__list { display: grid; gap: 6px; }
.facet__list label { display: flex; align-items: center; gap: var(--sp-2); font-size: var(--fs-small); color: var(--ink-80); cursor: pointer; }
.facet__list input { width: 14px; height: 14px; accent-color: var(--signal); }
.facet__list .count { margin-left: auto; color: var(--ink-40); font-family: var(--font-mono); font-size: var(--fs-micro); }

.contact-list { display: grid; gap: var(--sp-3); }
.contact-list li { display: flex; gap: var(--sp-3); font-size: var(--fs-small); color: var(--ink-60); }
.contact-list__icon {
  flex-shrink: 0; width: 26px; height: 26px; border: 1px solid var(--rule);
  display: grid; place-items: center; font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-60);
}
.contact-list strong { display: block; color: var(--ink); font-size: var(--fs-small); }

/* --------------------------------------------------------------------------
   12. Toolbar, sorting, pagination
   -------------------------------------------------------------------------- */
.toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4);
  flex-wrap: wrap; padding: var(--sp-3) 0; border-top: 1px solid var(--rule-firm); border-bottom: 1px solid var(--rule);
  margin-bottom: var(--sp-6);
}
.toolbar__count { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: var(--track-mono); text-transform: uppercase; color: var(--ink-60); margin: 0; }
.toolbar__count strong { color: var(--ink); }
.toolbar__sort { display: flex; align-items: center; gap: var(--sp-3); font-size: var(--fs-small); }
.select {
  appearance: none; padding: 8px 32px 8px 12px; border: 1px solid var(--rule);
  border-radius: var(--r-1); background: var(--paper-raised)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='11' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%235d6169' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 11px center;
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: var(--track-mono);
  text-transform: uppercase; cursor: pointer;
}

.pagination { display: flex; align-items: center; justify-content: center; gap: 0; flex-wrap: wrap; margin-top: var(--sp-7); }
.pagination a, .pagination span {
  min-width: 42px; height: 42px; padding: 0 12px; border: 1px solid var(--rule); border-right-width: 0;
  display: inline-flex; align-items: center; justify-content: center; color: var(--ink-60);
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: var(--track-mono);
  background: var(--paper-raised);
}
.pagination a:first-child, .pagination span:first-child { border-right-width: 1px; }
.pagination a:hover { background: var(--paper-invert); border-color: var(--paper-invert); color: var(--paper); }
.pagination [aria-current="page"] { background: var(--paper-invert); border-color: var(--paper-invert); color: var(--paper); }
.pagination .is-disabled { opacity: 0.35; pointer-events: none; }

/* --------------------------------------------------------------------------
   13. Product detail
   -------------------------------------------------------------------------- */
.gallery { display: grid; gap: var(--sp-3); min-width: 0; max-width: 100%; }
.gallery__main { position: relative; border: 1px solid var(--rule-firm); background: var(--paper-raised); min-width: 0; max-width: 100%; }
.gallery__main .media { width: 100%; max-width: 100%; }
.gallery__flag { position: absolute; top: 0; left: 0; z-index: 3; }
.gallery__thumbs { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); min-width: 0; max-width: 100%; }
.gallery__thumb { border: 0; padding: 0; background: var(--paper-raised); min-width: 0; overflow: hidden; }
.gallery__thumb .media { width: 100%; min-width: 0; }
.gallery__thumb .ph { aspect-ratio: 1 / 1; }
.gallery__thumb[aria-current="true"] { outline: 2px solid var(--signal); outline-offset: -2px; }

.pdp__title {
  font-family: var(--font-display); font-weight: 400; font-size: var(--fs-h1);
  line-height: 1.18; margin: 0 0 var(--sp-3); letter-spacing: -0.02em;
  overflow-wrap: normal; word-break: normal; hyphens: none; text-wrap: balance;
}
.pdp__tags { display: flex; flex-wrap: wrap; gap: var(--sp-2); margin-bottom: var(--sp-4); }
.pdp__summary { color: var(--ink-60); margin-bottom: var(--sp-5); font-size: var(--fs-lead); max-width: 60ch; }
.pdp__cta { display: flex; gap: var(--sp-3); flex-wrap: wrap; margin-top: var(--sp-6); }

/* Engineering spec table */
.spec-table { font-size: var(--fs-small); width: 100%; table-layout: fixed; }
.spec-table caption {
  text-align: left; font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: var(--track-wide); text-transform: uppercase; color: var(--ink-40);
  padding-bottom: var(--sp-3);
}
.spec-table th, .spec-table td {
  padding: 12px var(--sp-4); border: 1px solid var(--rule); text-align: left; vertical-align: top;
  overflow-wrap: anywhere; word-break: normal;
}
.spec-table thead th {
  background: var(--paper-invert); color: var(--paper); font-weight: 500;
  border-color: var(--paper-invert);
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: var(--track-mono); text-transform: uppercase;
}
.spec-table tbody th { background: var(--paper-deep); width: 38%; font-weight: 600; color: var(--ink); }
.spec-table tbody tr:nth-child(even) td { background: var(--paper-raised); }

.prose {
  font-size: var(--fs-lead); color: var(--ink-80); line-height: 1.8;
  max-width: var(--measure); overflow-wrap: break-word;
}
.prose table, .prose .ke-zeroborder {
  display: block; width: 100%; max-width: 100%; overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.prose th, .prose td { overflow-wrap: anywhere; word-break: normal; }
.prose img { max-width: 100%; height: auto; }
.prose h2, .prose h3 { margin-top: var(--sp-7); }
.prose h2 { font-family: var(--font-display); font-weight: 400; font-size: var(--fs-h2); }
.prose img { border: 1px solid var(--rule); margin-block: var(--sp-5); }
.prose ul { list-style: none; padding-left: 0; margin-bottom: var(--sp-5); }
.prose ul li { margin-bottom: var(--sp-2); padding-left: var(--sp-5); position: relative; }
.prose ul li::before { content: "—"; position: absolute; left: 0; color: var(--signal); }
.prose blockquote {
  margin: var(--sp-6) 0; padding: var(--sp-5) var(--sp-6);
  border-left: 2px solid var(--signal); background: var(--paper-raised);
  color: var(--ink); font-family: var(--font-display); font-size: var(--fs-h3);
}

.prevnext { display: flex; justify-content: space-between; gap: var(--sp-5); flex-wrap: wrap; padding-block: var(--sp-4); border-top: 1px solid var(--rule-firm); border-bottom: 1px solid var(--rule); margin-block: var(--sp-7); }
.prevnext a { font-size: var(--fs-small); color: var(--ink-80); }
.prevnext a:hover { color: var(--signal); }
.prevnext__label { display: block; font-family: var(--font-mono); font-size: var(--fs-micro); text-transform: uppercase; letter-spacing: var(--track-wide); color: var(--ink-40); margin-bottom: 4px; }

.rail {
  position: sticky; top: calc(var(--header-h) + var(--sp-4));
  max-height: calc(100vh - var(--header-h) - var(--sp-6));
  overflow-y: auto; overscroll-behavior: contain;
  display: grid; gap: var(--sp-4); align-content: start; padding-right: 4px;
}

/* --------------------------------------------------------------------------
   14. Forms
   -------------------------------------------------------------------------- */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4) var(--sp-5); }
.form-grid--single { grid-template-columns: 1fr; }
.field { display: grid; gap: 6px; }
.field--full { grid-column: 1 / -1; }
.field label { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: var(--track-mono); text-transform: uppercase; color: var(--ink-60); }
.field label .req { color: var(--signal); }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 13px; border: 1px solid var(--rule); border-radius: var(--r-1);
  background: var(--paper-raised); font-size: var(--fs-body);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--ink); background: #fff;
}
.field textarea { min-height: 130px; resize: vertical; }
.field__hint { font-size: var(--fs-micro); color: var(--ink-40); }
.field__error { font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--signal); display: none; letter-spacing: var(--track-mono); }
.field.has-error input, .field.has-error textarea { border-color: var(--signal); }
.field.has-error .field__error { display: block; }
.checkbox { display: flex; align-items: flex-start; gap: var(--sp-2); font-size: var(--fs-small); color: var(--ink-60); }
.checkbox input { width: 15px; height: 15px; margin-top: 3px; accent-color: var(--signal); flex-shrink: 0; }

.form-note { font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-40); letter-spacing: var(--track-mono); }
.form-status { display: none; padding: var(--sp-3) var(--sp-4); border-left: 2px solid #1f6b47; background: #eaf4ee; font-size: var(--fs-small); margin-bottom: var(--sp-4); }
.form-status.is-visible { display: block; }
.form-status--ok { border-left-color: #1f6b47; color: #1f6b47; }

/* --------------------------------------------------------------------------
   15. Article / news
   -------------------------------------------------------------------------- */
.article__header { padding-bottom: var(--sp-5); border-bottom: 1px solid var(--rule-firm); margin-bottom: var(--sp-6); }
.article__title { font-family: var(--font-display); font-weight: 400; font-size: var(--fs-h1); margin-bottom: var(--sp-4); letter-spacing: -0.02em; }
.article__meta { display: flex; flex-wrap: wrap; gap: var(--sp-5); font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-40); letter-spacing: var(--track-mono); text-transform: uppercase; }
.article__cover { border: 1px solid var(--rule-firm); margin-bottom: var(--sp-6); }
.article__body { font-size: var(--fs-lead); line-height: 1.85; color: var(--ink-80); max-width: var(--measure); }
.article__body h2 { margin-top: var(--sp-7); font-family: var(--font-display); font-weight: 400; font-size: var(--fs-h2); }
.article__toc { border-left: 2px solid var(--signal); padding: var(--sp-4) var(--sp-5); margin-bottom: var(--sp-6); background: var(--paper-raised); }
.article__toc h4 { font-family: var(--font-mono); font-size: var(--fs-micro); text-transform: uppercase; letter-spacing: var(--track-wide); color: var(--ink-40); margin-bottom: var(--sp-2); }
.article__toc a { display: block; font-size: var(--fs-small); padding: 3px 0; color: var(--ink-70, var(--ink-80)); }
.article__toc a:hover { color: var(--signal); }

.share { display: flex; align-items: center; gap: var(--sp-2); padding-block: var(--sp-5); border-top: 1px solid var(--rule-firm); }
.share__label { font-family: var(--font-mono); font-size: var(--fs-micro); text-transform: uppercase; letter-spacing: var(--track-wide); color: var(--ink-40); margin-right: var(--sp-2); }
.share__btn { width: 34px; height: 34px; border: 1px solid var(--rule); border-radius: var(--r-1); display: grid; place-items: center; color: var(--ink-60); background: var(--paper-raised); font-family: var(--font-mono); font-size: var(--fs-micro); }
.share__btn:hover { border-color: var(--ink); color: var(--ink); }

.tablist { display: flex; gap: 0; border-bottom: 1px solid var(--rule-firm); margin-bottom: var(--sp-6); flex-wrap: wrap; }
.tablist button {
  padding: 11px 18px; border: 0; background: transparent; color: var(--ink-60);
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: var(--track-mono);
  text-transform: uppercase; border-bottom: 2px solid transparent;
}
.tablist button:hover { color: var(--ink); }
.tablist button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--signal); }
.tabpanel { display: none; }
.tabpanel.is-active { display: block; }

/* --------------------------------------------------------------------------
   16. CTA band
   -------------------------------------------------------------------------- */
.cta-band {
  background: var(--paper-invert); color: #b9bec4;
  border-top: 2px solid var(--signal);
  padding: var(--sp-7) var(--sp-8);
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-7); flex-wrap: wrap;
}
.cta-band h2 { font-family: var(--font-display); font-weight: 400; color: var(--paper); margin-bottom: var(--sp-2); font-size: var(--fs-h2); }
.cta-band p { color: #8f959b; margin: 0; max-width: 54ch; }
.cta-band__actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; }

/* --------------------------------------------------------------------------
   17. Footer
   -------------------------------------------------------------------------- */
.site-footer { background: var(--paper-invert); color: #868c92; font-size: var(--fs-small); padding-top: var(--sp-8); }
.site-footer__grid { display: grid; grid-template-columns: 1.5fr repeat(4, 1fr); gap: var(--sp-7); padding-bottom: var(--sp-7); }
.site-footer h4 {
  color: var(--paper); font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: var(--track-wide); text-transform: uppercase; font-weight: 500; margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-2); border-bottom: 1px solid var(--rule-invert);
}
.site-footer a { color: #9aa0a6; }
.site-footer a:hover { color: var(--signal); }
.site-footer__list { display: grid; gap: 9px; }
.site-footer .brand__name { color: #fff; }
.site-footer .brand__cn { color: #6f757b; }
.site-footer__about { max-width: 34ch; margin-top: var(--sp-4); line-height: 1.75; color: #7f858b; }
.site-footer__bottom {
  border-top: 1px solid var(--rule-invert); padding-block: var(--sp-4);
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4); flex-wrap: wrap;
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: var(--track-mono); text-transform: uppercase;
}
.socials { display: flex; gap: var(--sp-2); }
.socials a { width: 32px; height: 32px; border: 1px solid var(--rule-invert); display: grid; place-items: center; font-family: var(--font-mono); font-size: var(--fs-micro); }

/* --------------------------------------------------------------------------
   18. Floating contact
   -------------------------------------------------------------------------- */
.floatpanel { position: fixed; right: 20px; bottom: 24px; z-index: 70; display: flex; flex-direction: column-reverse; gap: 8px; }
.floatpanel__btn {
  width: 48px; height: 48px; border-radius: var(--r-1); border: 1px solid var(--rule-firm);
  display: grid; place-items: center; background: var(--paper-invert); color: var(--paper);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.floatpanel__btn:hover { background: var(--signal); border-color: var(--signal); color: #fff; }
.floatpanel__btn--top { background: var(--paper-raised); color: var(--ink); }
.floatpanel__btn--top:hover { background: var(--ink); color: var(--paper); }
.floatpanel__pop {
  position: absolute; right: 0; bottom: 60px; width: 300px; background: var(--paper-raised);
  border: 1px solid var(--rule-firm); box-shadow: 0 18px 40px rgba(22, 24, 28, 0.16);
  padding: var(--sp-4); display: none;
}
.floatpanel__pop.is-open { display: block; }
.floatpanel__pop h4 { font-family: var(--font-display); font-weight: 400; font-size: var(--fs-h3); margin-bottom: var(--sp-3); }
.floatpanel__pop .contact-list { margin-bottom: var(--sp-3); }
.floatpanel__pop--wechat { width: 264px; text-align: center; }
.floatpanel__pop--wechat .qr { display: flex; justify-content: center; }
.floatpanel__pop--wechat .qr img { width: 220px; height: 220px; object-fit: contain; }
.floatpanel__hint { font-size: var(--fs-small); color: var(--ink-60); margin-bottom: var(--sp-3); }
.floatpanel__close {
  position: absolute; top: 6px; right: 8px; width: 28px; height: 28px; border: 0;
  background: transparent; color: var(--ink-60); font-size: 20px; line-height: 1;
}
.floatpanel__close:hover { color: var(--ink); }

/* --------------------------------------------------------------------------
   19. Empty state & notices
   -------------------------------------------------------------------------- */
.empty { text-align: center; padding: var(--sp-8) var(--sp-5); border: 1px dashed var(--rule); background: var(--paper-raised); }
.empty__icon { font-family: var(--font-mono); font-size: var(--fs-h2); color: var(--ink-20); margin-bottom: var(--sp-4); }
.empty h3 { font-family: var(--font-display); font-weight: 400; font-size: var(--fs-h2); margin-bottom: var(--sp-2); }
.empty p { color: var(--ink-60); max-width: 44ch; margin-inline: auto; }

.notice {
  display: flex; gap: var(--sp-3); padding: var(--sp-4);
  border-left: 2px solid var(--ink); background: var(--paper-raised);
  font-size: var(--fs-small); color: var(--ink-80);
}
.notice--warn { border-left-color: var(--signal); }

/* --------------------------------------------------------------------------
   20. Template hub
   -------------------------------------------------------------------------- */
.hub-hero { background: var(--paper-invert); color: #b9bec4; padding-block: var(--sp-9); }
.hub-hero h1 { font-family: var(--font-display); font-weight: 400; font-size: var(--fs-display); color: var(--paper); letter-spacing: -0.03em; margin-bottom: var(--sp-4); }
.hub-hero p { color: #9ba1a8; max-width: 68ch; font-size: var(--fs-lead); }
.hub-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: var(--sp-5); }
.hub-card { background: var(--paper-raised); border: 1px solid var(--rule); border-radius: var(--r-1); overflow: hidden; display: flex; flex-direction: column; }
.hub-card:hover { border-color: var(--rule-firm); }
.hub-card__preview { aspect-ratio: 16 / 10; border-bottom: 1px solid var(--rule); }
.hub-card__preview .ph { height: 100%; }
.hub-card__body { padding: var(--sp-4) var(--sp-5) var(--sp-5); }
.hub-card__body h3 { font-size: var(--fs-h3); margin-bottom: var(--sp-2); }
.hub-card__body p { font-size: var(--fs-small); color: var(--ink-60); flex: 1; }
.hub-card__path {
  font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-60);
  border: 1px solid var(--rule); padding: 2px 7px; display: inline-block; margin-bottom: var(--sp-3);
  letter-spacing: var(--track-mono);
}

.swatch-row { display: flex; flex-wrap: wrap; gap: var(--sp-4); }
.swatch { border: 1px solid var(--rule); width: 160px; }
.swatch__chip { height: 68px; }
.swatch__meta { padding: var(--sp-2) var(--sp-3); font-size: var(--fs-micro); }
.swatch__meta code { display: block; font-family: var(--font-mono); color: var(--ink-40); }

.table-plain { font-size: var(--fs-small); }
.table-plain th, .table-plain td { padding: 11px var(--sp-4); border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.table-plain thead th {
  background: var(--paper-invert); color: var(--paper); font-weight: 500;
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: var(--track-mono); text-transform: uppercase;
}
.table-plain code { font-family: var(--font-mono); font-size: var(--fs-micro); background: var(--paper-deep); padding: 1px 6px; color: var(--ink-80); }

/* --------------------------------------------------------------------------
   21. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .grid--sidebar { grid-template-columns: 240px minmax(0, 1fr); }
  .grid--split { grid-template-columns: 1fr; }
  .rail { position: static; max-height: none; overflow: visible; }
  .site-footer__grid { grid-template-columns: 1fr 1fr 1fr; }
  .header-tools__phone { display: none; }
  .searchbox input { width: 180px; }
  .hero__grid { grid-template-columns: 1fr; gap: var(--sp-6); }
  .hero__content p { max-width: 60ch; }
  .index-row { grid-template-columns: 36px 110px minmax(0, 1fr); }
  .index-row__action { grid-column: 2 / -1; }
}

@media (max-width: 900px) {
  :root { --header-h: 70px; }
  .container { padding-inline: var(--sp-5); }
  .utilbar__inner { justify-content: center; }
  .utilbar__list { display: none; }
  .nav-toggle { display: block; align-self: flex-start; margin: var(--sp-3) 0; }
  .mainnav__inner { flex-direction: column; }
  .mainnav__list { display: none; flex-direction: column; width: 100%; }
  .mainnav__list.is-open { display: flex; }
  .mainnav__item { width: 100%; }
  .mainnav__link { justify-content: space-between; padding: 14px var(--sp-5); border-bottom: 1px solid var(--rule-invert); }
  .megamenu {
    position: static; grid-template-columns: 1fr; border: 0;
    background: var(--petrol-deep); padding: var(--sp-3) var(--sp-5);
    opacity: 1; visibility: visible; transform: none; display: none;
  }
  .mainnav__item.is-open .megamenu { display: grid; }
  .megamenu__list a { color: #b9bec4; }
  .megamenu__list a:hover { color: #fff; }
  .megamenu__col-title { color: #7f858b; border-bottom-color: var(--rule-invert); }
  .megamenu__feature { border-left: 0; padding-left: 0; }

  .grid--2, .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--sidebar { grid-template-columns: 1fr; }
  .sidebar { position: static; max-height: none; overflow: visible; }
  .sec-head { grid-template-columns: 1fr; gap: var(--sp-3); }
  .trustbar__inner { grid-template-columns: repeat(2, 1fr); }
  .trustbar__item { border-right: 0; border-bottom: 1px solid var(--rule-invert); padding-left: 0 !important; }
  .trustbar__item:nth-child(odd) { border-right: 1px solid var(--rule-invert); }
  .section { padding-block: var(--sp-7); }
  .cta-band { padding: var(--sp-6) var(--sp-5); }
  .index-row { grid-template-columns: 32px 96px minmax(0, 1fr); gap: var(--sp-4); }
}

@media (max-width: 620px) {
  .container { padding-inline: var(--sp-4); }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .trustbar__inner { grid-template-columns: 1fr; }
  .trustbar__item:nth-child(odd) { border-right: 0; }
  .gallery__thumbs { grid-template-columns: repeat(4, 1fr); }
  .searchbox { display: none; }
  .brand__plate img { height: 30px; }
  .site-footer .brand__plate img { height: 26px; }
  .hero__arrow { width: 36px; height: 36px; }
  .index-row { grid-template-columns: 1fr; }
  .index-row__no { display: none; }
  .index-row__media { max-width: 160px; }
  /* The 1180px rule sets grid-column: 2 / -1; reset it for the single-column
     layout so no implicit column is created (mobile horizontal overflow). */
  .index-row__action { grid-column: auto; }
  /* Keep the fixed panel from covering as much of the content column */
  .floatpanel { right: 12px; bottom: 12px; }
  .floatpanel__btn { width: 42px; height: 42px; }
}

/* --------------------------------------------------------------------------
   22. Motion & print
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

@media print {
  .site-header, .mainnav, .utilbar, .floatpanel, .site-footer, .toolbar, .pagination { display: none !important; }
  body { background: #fff; color: #000; }
  .panel, .card { border: 1px solid #ccc; }
}